Malicious PDF — malware analysis report

Static analysis result for SHA-256 e44dd97963bc6979…

MALICIOUS

PDF

71.4 KB Created: 2021-03-22 14:23:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0f610d355a1708723b166c89cc8349ce SHA-1: 1d4b3deafee413ffe582fff72bc219ad80251631 SHA-256: e44dd97963bc6979f97ab4a9a81397e7086f5d7e23a232d4ebe5f6cc7e61f994
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, specifically as a phishing or SEO link farm. It contains a large number of external links, many pointing to disposable hosting, suggesting an attempt to manipulate search engine results or redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://golowaki.ru/123?utm_term=airdrie+academy+former+pupils PDF link annotation
    • http://subuxiwubemew.getenjoyment.net/73753767374.pdfIn PDF document text
    • https://cdn.sqhk.co/livoluxuwad/Zhbjaie/light_it_up_song_keeley.pdfIn PDF document text
    • https://xajapimiwumorav.weebly.com/uploads/1/3/0/7/130739235/vezawezodo-kovojak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463306/normal_5fe224dce02ed.pdfIn PDF document text
    • https://gejizataki.weebly.com/uploads/1/3/3/9/133997606/jekilamunobuvi-zepanujit-relanokaloru.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451231/normal_603a073cf3674.pdfIn PDF document text
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/rejorejugovav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383801/normal_603e70bf2323b.pdfIn PDF document text
    • http://xebupado.mypressonline.com/dungeons_and_dragons_monsters_by_cr.pdfIn PDF document text
    • https://xunimolozabipos.weebly.com/uploads/1/3/2/6/132681728/puwek.pdfIn PDF document text
    • https://cdn.sqhk.co/juxerawabuf/gdkjcRf/gasekazegiximobu.pdfIn PDF document text
    • https://wawupibinotab.weebly.com/uploads/1/3/4/9/134900246/9444574.pdfIn PDF document text
    • https://rogujodur.weebly.com/uploads/1/3/4/8/134899240/piwelovolikapu.pdfIn PDF document text
    • https://pegigisujojefuf.weebly.com/uploads/1/3/1/4/131413718/7619927.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feferabi.atwebpages.com/cirrosis_hepatica_compensada_y_descompensada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42bfe4c4-eb49-4b67-82a7-c06b809ae111/rinoxizapesowupap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ec7bc6-55fb-475e-98c4-031f12efc17b/xokowidetili.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_off0000d7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D9 5392 bytes
SHA-256: 34863b86640b834a59c7cc6b8e341949bd9647180c3adebe7373cd7aa82c3c0f
font_01_sfnt_off0000ea2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2D 10832 bytes
SHA-256: 7f3e8f6cd2b3f1fcd1a875296303c783d4be1d2d0becb34e3958262c49367b8a

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