Malicious PDF — malware analysis report

Static analysis result for SHA-256 d09029d4edf9a917…

MALICIOUS

PDF

89.7 KB Created: 2021-04-26 17:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e0b341d045a84289687c43067f757cc1 SHA-1: 72c94c30b7c90955a8a30d4fe587105355e3f129 SHA-256: d09029d4edf9a9170eadb837926b19bd9d023d852e1a9cc9d26b861bb222c48b
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external URLs are indicative of a malicious workflow, potentially involving JavaScript for redirection or exploit execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://vilenefex.ru/strik?utm_term=altered+carbon+resleeved+%25282020%2529+hindi PDF link annotation
    • https://cdn.sqhk.co/pumevigatare/AifahfK/50547701045.pdfIn PDF document text
    • https://wugumura.weebly.com/uploads/1/3/4/6/134601103/26cbb7.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/ggggjpG/gutedajepuwew.pdfIn PDF document text
    • https://wijedokimevu.weebly.com/uploads/1/3/4/6/134649091/mafotiwaxi_nevimidajeziwi_dunidikulesi.pdfIn PDF document text
    • https://wizenojozus.weebly.com/uploads/1/3/4/3/134319480/1597964.pdfIn PDF document text
    • https://cdn.sqhk.co/sewadokoka/l5CDhjM/dibebogipozupodazana.pdfIn PDF document text
    • https://cdn.sqhk.co/zomulusiku/yidgghh/tiny_armies_apple_watch.pdfIn PDF document text
    • https://mofasabopileb.weebly.com/uploads/1/3/4/1/134109330/zipekenemuxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/228cb5d4-a1a1-4575-b652-de4b55c9529c/d-link_dir-615_firmware_upgrade_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/87384350947.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c26ae3a0-e0bd-4fed-933d-66bad81c9790/90457819804.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44950e70-91c0-428f-b03e-7761ebaa294a/braun_wheelchair_lift_parts_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/pevatujujukusuxemorepudut.pdfIn PDF document text
    • https://0c6b2c5e-c852-454c-8c01-bea24f6181fd.filesusr.com/ugd/b97644_9aa9e7fb98e04cdd80e462037405e60c.pdf?index=trueIn PDF document text
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_8f127c7bb6b24181846a0dc208def4b0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d842a5a6-2f95-4879-a752-dcc9a8a324b2/how_do_you_handle_stress_in_your_life.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88e9f340-a20e-4fa9-8b75-e2d2956c7833/bodyweight_workout_circuit_routine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af15c622-c57b-42d7-8232-ce0e0922c9a8/human_anatomy_and_physiology_lab_manual_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1fde511-29c7-493b-a03f-4d189828803f/manual_instrucciones_gps_garmin_72_espaol.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e47b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE47B 6744 bytes
SHA-256: 048fb1891f432488516cd811e7b04d68e7d39e548ca3495625137f8fb0c23ff4
font_01_sfnt_off0000f52f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52F 5104 bytes
SHA-256: b202a9e0509a2e2e3e98cd63e95552dc220d5644881fd8a467f588eeea5d4579
font_02_sfnt_off000106d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D2 5644 bytes
SHA-256: 7f2b932a964485cab7d138052ce456367d87c0b29cd5d27464a150c46e782164
font_03_sfnt_off00011a06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A06 2252 bytes
SHA-256: aeee9b2fd577c594ede074a7e3493832e024aab8d381a7c1d16527c2e435dd06
font_04_sfnt_off00012444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12444 11976 bytes
SHA-256: f01569fe41fe6d566f8951eae8c7064d92acec475073f4914e79cb8273fba1ab
font_05_sfnt_off00014cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CD4 2752 bytes
SHA-256: 11bf571f0af05367446b2020c2f1c6267491649bc48117454eca19867f219dc9

Open this report in the interactive analyzer, or submit your own file for analysis.