Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd69c8bf8462321a…

MALICIOUS

PDF

75.4 KB Created: 2021-04-14 03:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 34b3787dead4cabffdbdc1f660824d62 SHA-1: 896437c9de2f46d767fe1ebff27957df2d596f29 SHA-256: fd69c8bf8462321ab8b981759631f8e0f3d716f7c8651036ae8e776e0a93e769
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://nipisod.ru/strik?utm_term=symbol+ds9208+scanner+setup PDF link annotation
    • https://cdn.sqhk.co/remigalakefo/jhqAshh/xizowamejakosi.pdfIn PDF document text
    • https://jewupoma.weebly.com/uploads/1/3/1/4/131437657/ae7d5f0d7f.pdfIn PDF document text
    • https://fibepuranes.weebly.com/uploads/1/3/4/0/134041348/jegexiwokebinefupi.pdfIn PDF document text
    • http://begigemiwite.22web.org/wasazasagasapuwolokunefof.pdfIn PDF document text
    • https://kopusitubo.weebly.com/uploads/1/3/4/6/134698796/bavesatutaxewununo.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/cgcGhhA/pimepadalazupili.pdfIn PDF document text
    • https://donaxitod.weebly.com/uploads/1/3/4/6/134688316/tudilememoxir.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvinudubuno/xMOiaia/boketedebatete.pdfIn PDF document text
    • https://cdn.sqhk.co/gupetipek/Jgdhhhd/46405196611.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vufagozujidivu.epizy.com/tcs_bancs_architecture.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/assamese_song_chol_gori.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/how_to_make_money_fast_online_for_free_in_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/74727201349.pdfIn PDF document text
    • http://rigeladujonij.epizy.com/matt_redman_10_000_reasons_bless_the_lord_lyrics_and_chords.pdfIn PDF document text
    • http://falivodekolulo.epizy.com/niccolo_machiavelli_the_prince.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/ham_iv_rotor_wiring.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/vowodij.pdfIn PDF document text
    • http://firuwasuwubo.epizy.com/90041286904.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_off0000e3de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DE 6188 bytes
SHA-256: f1dc8d7bc3742d4eaa9fa9ce39e4d3cf6bc21e06c345989d6dcb35863ebe48fc
font_01_sfnt_off0000f8c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C9 11844 bytes
SHA-256: 0bc0f29a8ac780d048e8ee33f9c1b77c9755e0db8cd8b35a90fae0ecc219ab7d

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