Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3c64b33bfcaad44…

MALICIOUS

PDF

73.3 KB Created: 2021-01-23 11:02:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: f90637f3275bcd0b64228dcbcb9f97c1 SHA-1: 1e5d3fbd35d2dc2d3e093b21a0123cc488bdc16d SHA-256: a3c64b33bfcaad44b7cb73760784ad988c4d7f700b14f0502cdee1f7a9a5ee15
164 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is part of a link farm and uses urgency lures, suggesting a phishing or malware distribution attempt. The presence of embedded URLs, including one pointing to a suspicious domain ('trafffi.ru'), further supports this. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest malicious intent, likely to redirect users to malicious content.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://trafffi.ru/aws?utm_term=davis+drug+guide+app+login PDF link annotation
    • https://zuwulixomelonib.weebly.com/uploads/1/3/4/3/134385653/fimazolafiwim_sidemenoxanuna_fewobu.pdfIn PDF document text
    • https://site-1167955.mozfiles.com/files/1167955/luved.pdfIn PDF document text
    • https://site-1237736.mozfiles.com/files/1237736/coliform_chu_nhit_l_g.pdfIn PDF document text
    • http://dazinifuxevoji.22web.org/30919763792.pdfIn PDF document text
    • https://tewuzafigew.weebly.com/uploads/1/3/4/3/134339743/02a205ab6565117.pdfIn PDF document text
    • https://japafapu.weebly.com/uploads/1/3/1/4/131437770/2105244.pdfIn PDF document text
    • https://site-1190334.mozfiles.com/files/1190334/commuters_sans_bold_font_free_download.pdfIn PDF document text
    • https://site-1171925.mozfiles.com/files/1171925/dreadout_2_pc_full_version.pdfIn PDF document text
    • https://xezamojukugenu.weebly.com/uploads/1/3/5/3/135316948/7842576.pdfIn PDF document text
    • https://minunelojob.weebly.com/uploads/1/3/1/4/131453060/xakabagenise_ribaneruki_tulefuwasixufew.pdfIn PDF document text
    • https://site-1228080.mozfiles.com/files/1228080/confirmation_letter_after_probation_period_format.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/bisiku/nomuwisemib.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/kejogaruvogetavapanotok.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/garfield_movie_fzmovies.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/60530455029.pdfIn PDF document text
    • http://fufibilola.epizy.com/brahmandnayak_serial_title_song.pdfIn PDF document text
    • http://pomuvoxibi.epizy.com/zikoxapidosewoxekiris.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/calibre_ebook_reader_for_windows_7.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_off0000df4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4F 5188 bytes
SHA-256: ebdeebb64ac88ecdb60d6dab480597af464e76596065b67984f46f88bcfa0e96
font_01_sfnt_off0000f112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF112 11780 bytes
SHA-256: 1d78adbe37575022cdfd8348d6ba1876581e7b04ab19e214478367ee8c48e767

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