Malicious PDF — malware analysis report

Static analysis result for SHA-256 c11195eec85c27ee…

MALICIOUS

PDF

72.9 KB Created: 2021-02-16 21:50:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 31872d0bd4544f61129c803a800f0833 SHA-1: 23a6f355ef78faa451bc1590db9f4be261752cee SHA-256: c11195eec85c27ee88325d4f83873dafc379f3f0900efe6e5da7c3bd6d970c54
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 embedded URLs, with a primary focus on 'seumenha.ru', suggesting a redirection to a malicious site. The document body, though heavily obfuscated, appears to be a lure related to 'action research' or software downloads, consistent with social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/wix?keyword=a+short+guide+to+action+research+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381101/normal_5fd7d829d91d3.pdfIn PDF document text
    • https://cdn.sqhk.co/dolafita/jh6JQbb/zombie_survival_wasteland_mod_apk_1._2._23.pdfIn PDF document text
    • http://aycotoro5.xyz/soap_cutting_asmr_soap_carving_simulator_games_onlineezml7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452621/normal_5fec6ebf52dd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471249/normal_600caeaf62a7f.pdfIn PDF document text
    • http://betmoy56.com/958395170934d16d.pdfIn PDF document text
    • https://cdn.sqhk.co/kixagixupo/ghGgANr/ice_cream_maker_cooking_game.pdfIn PDF document text
    • http://duplicwcnj.space/callaway_gardens_resort_georgia4wf87.pdfIn PDF document text
    • http://wibedepotemuru.22web.org/leziv.pdfIn PDF document text
    • http://muzhskoizhurnal.ru/tolezunolopebezoi3pzz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456377/normal_5fd63cfd63e1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379483/normal_5fe0104935eaf.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafanez/oicjHEd/96451411292.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467277/normal_6022ced88697c.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/satulibaren/minecraft_windows_10_edition_1._13.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/conditional_if_google_sheets.pdfIn PDF document text
    • http://pasasowagore.rf.gd/tuberculous_meningitis_classification.pdfIn PDF document text
    • https://s3.amazonaws.com/kasuwevovog/neonatal_abstinence_syndrome_scoring_guidelines.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_off0000d329.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD329 5256 bytes
SHA-256: 653ee1ba79917456a4722b1f1c4fd2e4cd5b3b77da786d96a3466e7c8567763c
font_01_sfnt_off0000e508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE508 10184 bytes
SHA-256: 8951662e2aafec0ab83a78194ee0f2e063000efd1f1c20f6acdb0418bc4fd63f
font_02_sfnt_off000107d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D9 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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