Malicious PDF — malware analysis report

Static analysis result for SHA-256 820a405f9a7d68a7…

MALICIOUS

PDF

91.9 KB Created: 2021-02-24 22:21:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: eec07e63cbbf1198dcf4bf97a8a7b252 SHA-1: 3a8a40ea9558b8e7031a1a5a757afc92629811d9 SHA-256: 820a405f9a7d68a75a39a65dced0bc675f86562ddf7df6403207ccdf59e78266
146 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including ML classification and ClamAV detection, flagging it as a phishing trojan. The PDF contains numerous embedded URLs pointing to disposable domains and link farms, suggesting a phishing or scam attempt to lure users to malicious sites. The presence of 'Google chrome plugins store' in the document body, combined with the numerous external links, indicates a likely attempt to trick users into downloading malicious software or providing sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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://baarspo.ru/wix?keyword=google+chrome+plugins+store PDF link annotation
    • http://moreprodukti.com/55203882050uwr86.pdfIn PDF document text
    • http://leree6.club/how_to_set_a_woods_digital_timero9mm2.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/haBgeif/gba_emulator_roms_free_download.pdfIn PDF document text
    • http://vereffka.xyz/91867080554o4twx.pdfIn PDF document text
    • https://tazumeter.weebly.com/uploads/1/3/1/4/131438167/e77ba61637bf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404969/normal_5ffbbb850f361.pdfIn PDF document text
    • https://gipenozup.weebly.com/uploads/1/3/1/0/131070487/bujolugaxumi.pdfIn PDF document text
    • https://cdn.sqhk.co/tatidukigag/hh6riab/lipujeweligamilugiwotoze.pdfIn PDF document text
    • http://matroskin.space/soundcloud_plays_apkr8tlt.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377115/normal_60086cdacdbfa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369493/normal_5fcdd7dab7874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492593/normal_5fdb2efaeeb9c.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
    • http://gigigij.rf.gd/boxed_in_font_free.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_off00011be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BE5 5048 bytes
SHA-256: 6ce067f26710a8167327fb0990121582b08b8a5b58c8c02a52cef608e3e96cb8
font_01_sfnt_off00012cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CF3 11700 bytes
SHA-256: 82790fe9d6b9e653377f32651a3bcb35359a6ab872a569a84b160cb065fb2fc3
font_02_sfnt_off0001546d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1546D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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