Malicious PDF — malware analysis report

Static analysis result for SHA-256 420ac16beffa48be…

MALICIOUS

PDF

81.9 KB Created: 2021-03-15 21:33:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: aad810cd8208d7db48241a3660bbd140 SHA-1: 089a46652a05279050d55e437b9271d4ba7c3871 SHA-256: 420ac16beffa48bec98f4d5a8a39b122fad20ee297f5b24a6bdc7bbcc67820d4
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/123?utm_term=burnout+paradise+dlc+trophy+guide PDF link annotation
    • http://zigapajuxijado.mywebcommunity.org/tomakojuwovawo.pdfIn PDF document text
    • https://cdn.sqhk.co/jobiwokojo/VHehjid/my_boy_gba_emulator_game_files.pdfIn PDF document text
    • https://nalovitifa.weebly.com/uploads/1/3/4/6/134600698/jaboliketiza-kevan-vugirojamaz-mebole.pdfIn PDF document text
    • https://cdn.sqhk.co/daposofoxig/gdKbzia/60010049524.pdfIn PDF document text
    • https://cdn.sqhk.co/peporewav/ipSibhc/love_creek_orchard_apple_picking.pdfIn PDF document text
    • https://sevujixosatanin.weebly.com/uploads/1/3/5/3/135316334/dde29ac01.pdfIn PDF document text
    • https://cdn.sqhk.co/gixotagokezu/geibPT7/bewunasewabukulasebokise.pdfIn PDF document text
    • https://serudifatu.weebly.com/uploads/1/3/5/3/135324897/8cfb4dad1f4b.pdfIn PDF document text
    • https://cdn.sqhk.co/laxepinam/apBjdij/asthma_guidelines_pediatrics.pdfIn PDF document text
    • https://mazofowi.weebly.com/uploads/1/3/4/3/134312703/3e5f1.pdfIn PDF document text
    • https://cdn.sqhk.co/suxujaba/jLhhhLf/43279811370.pdfIn PDF document text
    • https://berebexamoleti.weebly.com/uploads/1/3/1/3/131384136/mopukitojevaberu.pdfIn PDF document text
    • https://xikaxuroloxo.weebly.com/uploads/1/3/1/4/131406092/6768876.pdfIn PDF document text
    • https://cdn.sqhk.co/vivutazawi/dicjdPU/usaf_simulators_division.pdfIn PDF document text
    • https://webebusili.weebly.com/uploads/1/3/0/9/130969565/1353228.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://4c6480a9-ccec-4c20-853c-cc48681c44ad.filesusr.com/ugd/935adc_f5fc5ce37075451d9b2b41fbc7c3413a.pdf?index=trueIn PDF document text
    • https://1864c106-1a4f-4194-99fb-dabd5a0af450.filesusr.com/ugd/17b194_014c60bb22cb4e79bb310a9ac9db275a.pdf?index=trueIn PDF document text
    • https://8c805f22-5240-4a8e-9b4d-8499607ff1fc.filesusr.com/ugd/76156b_ef21803a167c48a19ea6f9cf0caccffb.pdf?index=trueIn PDF document text
    • http://nabenejajoko.myartsonline.com/lodasi.pdfIn PDF document text
    • https://9049409e-dcbb-43fe-b7cb-0f7a5d042cf1.filesusr.com/ugd/e59eee_5be4cd57f6524734917c1546a1656cf8.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010125.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10125 5488 bytes
SHA-256: ae7cfd50322362af7d964c42fbd331b73df3dbd84bf6bf1292fd7fa135c50ed9
font_01_sfnt_off000113cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113CD 10676 bytes
SHA-256: f967240a6fb8e5dba944ae5362e2d68d9dfc08ed50ddb044b9d5700b98fd6b70

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