Malicious PDF — malware analysis report

Static analysis result for SHA-256 40485b5e8db467e2…

MALICIOUS

PDF

81.5 KB Created: 2021-03-21 08:38:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: f2b7dcf3eecf90fd75825bd6f2fb54d4 SHA-1: 6a1482e43188c57b3a49f0fb4a0378f207de1f2c SHA-256: 40485b5e8db467e261db72690bfde400857155e22c5797be0e30d2c9e324ab22
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file contains a large number of external links, many hosted on disposable domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • 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.
  • 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://xajibur.ru/wix?keyword=ssbu+falco+combos PDF link annotation
    • https://salizobujexi.weebly.com/uploads/1/3/5/3/135325558/5644439.pdfIn PDF document text
    • https://koxabiwepa.weebly.com/uploads/1/3/4/3/134309970/4593611.pdfIn PDF document text
    • https://dezegumi.weebly.com/uploads/1/3/4/1/134108828/lixedutoj.pdfIn PDF document text
    • http://kellys.space/milady_barber_textbook_6th_edition8cqii.pdfIn PDF document text
    • https://sidutoxa.weebly.com/uploads/1/3/4/8/134886075/gekevosare-gemav-bolozone.pdfIn PDF document text
    • http://tonemisi.medianewsonline.com/short_vowel_sounds_worksheets_for_grade_1.pdfIn PDF document text
    • http://chambreop.xyz/how_much_does_the_nordictrack_fs7i_weight99z90.pdfIn PDF document text
    • http://nuverlites.online/jirodcc0nh.pdfIn PDF document text
    • https://pijaremurepapo.weebly.com/uploads/1/3/1/4/131406688/wovivirimefeze_domovotitori_zejeramanuzuk.pdfIn PDF document text
    • https://sudiseva.weebly.com/uploads/1/3/4/4/134470115/gigiwegavidupivus.pdfIn PDF document text
    • http://sewukagazub.mypressonline.com/is_google_maps_free_for_iphone.pdfIn PDF document text
    • https://kotutoxegaru.weebly.com/uploads/1/3/2/6/132695780/zimigekodoj-xitimowiji-wepifajiwi-karufari.pdfIn PDF document text
    • http://meinekarten.best/how_to_calculate_subnet_mask_from_ip_address_with_example_javadzw0p.pdfIn PDF document text
    • https://bamukafigozoxin.weebly.com/uploads/1/3/4/8/134861202/6eb6d91eecf926.pdfIn PDF document text
    • http://lanizimugigil.getenjoyment.net/27805406574.pdfIn PDF document text
    • http://pifadopagel.scienceontheweb.net/89143261656.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pezamax.myartsonline.com/78621028918.pdfIn PDF document text
    • https://bcd7deca-fd5d-492b-a220-d373ca515bc9.filesusr.com/ugd/12f4eb_d58ca0be64f94e66bec47b63b6ab3c7d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e3d3741-952b-4132-a745-3a5b8e228978/python_read_write_text_file_line_by_line.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a150feb-4e83-49a5-aa60-2fe86411f4c6/35353128279.pdfIn PDF document text
    • https://3c1efe6f-6e34-41bb-a2c4-2be85dd3cb33.filesusr.com/ugd/41f880_6bc9b4c8bc7a4bf8b2db15a3ca3dfa6d.pdf?index=trueIn PDF document text
    • https://a49aa754-465e-4bbd-924e-b3d0e7b66bd4.filesusr.com/ugd/81d6a4_2b96cc32861b4bb899277bcd1dc245c8.pdf?index=trueIn PDF document text
    • https://944bcc21-9f45-42c2-9889-8cf837fa5d1c.filesusr.com/ugd/50f869_3f5d49a495b648a5b78c016d28c4ebac.pdf?index=trueIn PDF document text
    • https://cd489911-dc6d-4439-b408-84622343fb93.filesusr.com/ugd/d8e941_e4805e7c7fc447c18c6a6f5ebe15633d.pdf?index=trueIn 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
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C3 3040 bytes
SHA-256: 2c5317f71244211636344979a2881e29df9c2e99b014996fa1fcd59ecb365143
font_01_sfnt_off0001019f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1019F 5172 bytes
SHA-256: 9d722be5484d173a55719ec27b085a3037f33b583e9007906d369071dd179eb3
font_02_sfnt_off0001132d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1132D 10780 bytes
SHA-256: 4c6912d6f9bc5faa582bd6615f4fdc5e96f6ef25ec984c474071719b53feb0d8

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