Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb7eeb6030177f0d…

MALICIOUS

PDF

73.9 KB Created: 2021-01-12 23:11:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: c046cc2975cecceac0d3ec9c9fe6f750 SHA-1: 9fee130633967a2b147482fa61fabe48add66491 SHA-256: fb7eeb6030177f0da9f15bf9bc97fac1c79534c4bac581a401dfc38bc90c58e8
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with a primary external URI pointing to 'trafffi.ru', suggesting a phishing or malware distribution attempt. The PDF's structure and the presence of multiple links indicate it functions as a link farm designed to redirect users to malicious content.

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 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://trafffi.ru/123?utm_term=pedagogical+content+knowledge+in+social+studies PDF link annotation
    • https://zupufirelerige.weebly.com/uploads/1/3/0/9/130969681/sakoguvi.pdfIn PDF document text
    • https://cdn.sqhk.co/dumadomizore/MiMohgi/14064306396.pdfIn PDF document text
    • https://xuropowupenuba.weebly.com/uploads/1/3/0/8/130813979/ec13c2750bf65ec.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/5157619.pdfIn PDF document text
    • https://todisosoban.weebly.com/uploads/1/3/1/0/131070867/zinuki_lajilejizitali.pdfIn PDF document text
    • https://xovixonu.weebly.com/uploads/1/3/4/8/134896571/314599.pdfIn PDF document text
    • https://cdn.sqhk.co/benibavagoge/PSivWjf/83064925955.pdfIn PDF document text
    • https://jibowosiz.weebly.com/uploads/1/3/4/6/134632869/33065b11d11d31.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/41871657071.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/coshocton_beacon_morning_report.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/60598209609.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/download_free_minecraft_cracked_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/minutemen_one_reporter_s_opinion.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/lawokuwofe.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E7 5048 bytes
SHA-256: e166f4f7119a8986c0f28feca79cc24294634f183eadc06c2312e33dce85e998
font_01_sfnt_off0000e636.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE636 10560 bytes
SHA-256: f3d76de2506d5b3ccaf8d40f4891ba57cfc715d8ca4bc9a48180c108b5205f98
font_02_sfnt_off00010a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A48 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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