Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e84f67770aeba2…

MALICIOUS

PDF

67.2 KB Created: 2021-01-13 15:49:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9fe2e6db9d0e8f36e54be2d8e01e120c SHA-1: 842d1a47b1b3915a1944d97d187af1bb1424c43b SHA-256: 47e84f67770aeba270a4991e09d041d92ccaab24cdef6a8f2fa577b0f2b554da
264 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier. It contains a large number of embedded links, many pointing to disposable hosting services, suggesting a link farm or SEO manipulation tactic. One critical heuristic indicates a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to a 'Texas shaped waffle maker' and authoring application details, but the primary malicious activity appears to be the extensive link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://gettraff.ru/123?utm_term=texas+shaped+waffle+maker In PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/xafiropekotu.pdfIn PDF document text
    • https://pufabakorulur.weebly.com/uploads/1/3/4/3/134320636/bugojoxasiwu.pdfIn PDF document text
    • https://jitolubupiloz.weebly.com/uploads/1/3/4/6/134637312/1387987.pdfIn PDF document text
    • https://site-1176701.mozfiles.com/files/1176701/koposamojefagodike.pdfIn PDF document text
    • https://zelerajolames.weebly.com/uploads/1/3/0/7/130776056/vagafowax.pdfIn PDF document text
    • https://cdn.sqhk.co/zowolanazew/jgdgige/highway_1_california_coast.pdfIn PDF document text
    • https://cdn.sqhk.co/jirowolad/he29jc7/teacher_appreciation_quotes_during_quarantine.pdfIn PDF document text
    • https://site-1171574.mozfiles.com/files/1171574/neuschwanstein_castle_3d_puzzle_assembly.pdfIn PDF document text
    • https://site-1177775.mozfiles.com/files/1177775/xapari.pdfIn PDF document text
    • https://site-1168463.mozfiles.com/files/1168463/bokojivupitimamadevom.pdfIn PDF document text
    • https://kavixonew.weebly.com/uploads/1/3/4/5/134592395/2368244.pdfIn PDF document text
    • https://cdn.sqhk.co/raxinosi/ZjdiapQ/multi_color_ballpoint_pens.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/tokudapele/android_admob_smart_banner_height.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_off0000c952.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC952 5456 bytes
SHA-256: db4f62d3702b9eea6875380a31c912f4080665aff8be4ea8fcd6117476c5a87b
font_01_sfnt_off0000dbcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBCF 10720 bytes
SHA-256: 29294c798377a085b78617758edc0861c564247bf0994956211286176b45ed9c

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