Malicious PDF — malware analysis report

Static analysis result for SHA-256 34962afd7088a4a0…

MALICIOUS

PDF

69.7 KB Created: 2020-12-19 06:27:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 89d8553933eeb5dafd243114cbabcf4e SHA-1: 9981e9f1a5ddba6aa470f86c8f5dab3691940ee8 SHA-256: 34962afd7088a4a05c7c2e6a7d176bb76a99eb3ad9a5286de10510c17e8175a1
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a malicious intent. It contains numerous external links, with the primary one pointing to a URL associated with a link farm. ClamAV also detected it as Pdf.Phishing.Trojan. The presence of embedded URLs and the structure suggest it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffnew.ru/strik?utm_term=cenarion+expedition+rep+guide+tbc PDF link annotation
    • https://tazifidaron.weebly.com/uploads/1/3/4/9/134901468/5887552.pdfIn PDF document text
    • https://lifalaril.weebly.com/uploads/1/3/4/8/134883644/demowewu.pdfIn PDF document text
    • https://sarutofujatazix.weebly.com/uploads/1/3/4/5/134584212/xakuwegapepepoboker.pdfIn PDF document text
    • https://bekonerotukabi.weebly.com/uploads/1/3/4/3/134366377/1b20bfc3a253.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/fedubowurofizovolumaf.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd53b4d610986319753e28/t/5fdd5e4aef735726d243876c/1608343115963/zugavanidatuxasatesoba.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc17741e5c7695ca99fa7a5/t/5fd00eb16742965a9df1bef1/1607470773004/latest_magic_sing_karaoke_system.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/lotogoduzikusepuruf.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/81691069509.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/lapp_cable_gland_catalogue.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/153d2420-42b2-4d76-a99a-eb5d65ed512c/49554414365.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afdd1136-a7bc-4514-9d1a-05b378a7fc5a/navsea_0938_lp_018_0010.pdfIn PDF document text
    • https://s3.amazonaws.com/vanatul/zetebosuru.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/i_write_the_songs_sheet_music.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4A2 5144 bytes
SHA-256: 2f7a8792e88568516ac5b1296a9bfc9d173e95661a4a11409c80db12c8777209
font_01_sfnt_off0000e62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62E 10548 bytes
SHA-256: a2e7c3621ea782ba8aff72a07488e62173e35353e48ae55d257f193218991426

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