Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e2529af6a458a14…

MALICIOUS

PDF

66.5 KB Created: 2021-02-25 16:58:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 74158003ac2d6e9f110a15ec3889c788 SHA-1: 277a4837095a5eeaceff35026b42f9b250cde0c3 SHA-256: 7e2529af6a458a140877f2a012efe9d116d3651418dcb3d57129719ebe11ccb5
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, indicating a phishing or trojan threat. It contains numerous external URIs, with one prominent URL pointing to a suspicious domain ('maypoin.ru') that is likely used for distributing malicious content or phishing. The document body, though heavily obfuscated, appears to contain product-related text, suggesting a lure to disguise the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://maypoin.ru/123?utm_term=breville+the+juice+fountain+cold+plus+juicer+-+brushed+stainless+steel PDF link annotation
    • http://copyright-rules-help.com/551172317380ai3c.pdfIn PDF document text
    • http://biolinkus.me/64776280721m9elr.pdfIn PDF document text
    • https://cdn.sqhk.co/navuwamas/icoighe/94535744613.pdfIn PDF document text
    • http://9gusevshop.website/72476425153p9a98.pdfIn PDF document text
    • http://vezdesami.ru/huggies_little_snugglers_size_guidemi2vo.pdfIn PDF document text
    • http://ig-objectionform.com/methemoglobinemia_adalah3to3w.pdfIn PDF document text
    • http://fizovovapoz.iblogger.org/46284266524.pdfIn PDF document text
    • http://health-top.ru/tumitaxerespvj0.pdfIn PDF document text
    • http://vykupavto54.ru/police_car_racing_3d_game_download35jav.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/pikoxilof.pdfIn PDF document text
    • http://wilunimexa.epizy.com/uae_vat_calculator_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/lubamutubuporimerovebapat.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/broken_screen_mobile_wallpaper.pdfIn PDF document text
    • http://tunozesanapi.rf.gd/86940511868.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/gixet.pdfIn PDF document text
    • https://s3.amazonaws.com/wifiduxezo/wurofavibopivuwu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c83d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC83D 5600 bytes
SHA-256: 7621192aeca453436fd652a95cd122b068e41f11ab33e593c78e33c99716829b
font_01_sfnt_off0000db48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB48 9736 bytes
SHA-256: 627ab92519c5f17a81fef66c24cb532869d40770bf25f1af6a9ecdf8a3944b94

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