Malicious PDF — malware analysis report

Static analysis result for SHA-256 220699346595fea6…

MALICIOUS

PDF

68.5 KB Created: 2021-05-12 11:55:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ea80b81d55fcad50926890a62f41490a SHA-1: 980e08c51f62d62a876cc5fbfc83d623ec838c24 SHA-256: 220699346595fea6df0606801081a735e8c4bd5df8738f89090a5bc76b310112
156 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 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://druttle.ru/strik?utm_term=delonghi+tch8093er+2400w+tower+ceramic+heater+instructions PDF link annotation
    • https://jedunaxalow.weebly.com/uploads/1/3/1/6/131606453/ed0210bbc88b.pdfIn PDF document text
    • https://cdn.sqhk.co/goronikel/fMAuWhh/dirac_live_bass_management_release_date.pdfIn PDF document text
    • https://cdn.sqhk.co/juzilolawu/hhAgjMT/pojunofu.pdfIn PDF document text
    • https://nirefuriwubava.weebly.com/uploads/1/3/1/6/131637308/kefugeb.pdfIn PDF document text
    • https://cdn.sqhk.co/daborofus/gdrgdr8/bujomexawusixajurededifo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://e4fb9bf1-a3d6-4767-9bf2-2a1021e5dc09.filesusr.com/ugd/53cfc7_d3b27100300b4dc0aa172590decab5d4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mejifavo/zatalu.pdfIn PDF document text
    • https://e6a48395-9ebc-465e-8505-c4b20d7b8e72.filesusr.com/ugd/81e12b_fbfaa3a4b1f841f98dbb27d6deea33d6.pdf?index=trueIn PDF document text
    • http://tebalakafepikob.rf.gd/sovavosuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/petsafe_invisible_fence_transmitter_beeping.pdfIn PDF document text
    • https://18e7ef82-5c75-44fe-ae22-4c356c2c9ce0.filesusr.com/ugd/749e61_7437cc7f483c4491a1b3d1952e83259a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/the_secret_language_of_birthdays_september_7.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/2972359053.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/52442558511.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/aha_hypertension_guidelines_2018_ppt.pdfIn PDF document text
    • http://jokabaj.epizy.com/cascadia_weekly_voting_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/sewogu.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
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9A9 6180 bytes
SHA-256: 1e4f0ca8c7d7139ee100877250db8d645633f765885c1e074514348a0a94a094
font_01_sfnt_off0000de96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE96 11180 bytes
SHA-256: f24f0e6b762f266b77bafec80f3638f085a9cffeb68491adb53ae0c332444fe1

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