Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e2a11f93f4cbf3b…

MALICIOUS

PDF

79.7 KB Created: 2021-03-15 17:53:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1070732ea3ab479df1e0f799ea410e4 SHA-1: 62f8b083d8fe9ceb2c95e0cbce0c6701d373299b SHA-256: 2e2a11f93f4cbf3b7f78ed166b78880b811ca69a62be4fc05241c896cd3688d5
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains numerous external links, suggesting a link farm or phishing attempt. One prominent URL, https://xezojetit.ru/wix?keyword=home+depot+sales+associate+age+requirement, is directly embedded and likely leads to a malicious site. The presence of embedded JavaScript, though not fully detailed, indicates potential for further malicious actions like downloading payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/wix?keyword=home+depot+sales+associate+age+requirement
    • https://cdn-cms.f-static.net/uploads/4369491/normal_601e04ba41294.pdf
    • https://static.s123-cdn-static.com/uploads/4472775/normal_5fef34286349b.pdf
    • https://static.s123-cdn-static.com/uploads/4456985/normal_5ffbdeac32388.pdf
    • https://cdn-cms.f-static.net/uploads/4490367/normal_6019b4aaaf676.pdf
    • http://ziwixan.iblogger.org/dizerarasofitufabagi.pdf
    • http://dawajilimomod.iblogger.org/gajigezamajaganewobunutod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f2cf26a3-403f-4a23-9369-15c414dfb574/87678041964.pdf
    • https://uploads.strikinglycdn.com/files/3c4d2e01-88be-453d-9ff7-23852a669f3d/what_does_a_full_360_mean.pdf
    • https://uploads.strikinglycdn.com/files/1211297b-a76f-4fb7-be63-4e8746c2bc7e/annie_john_book_online.pdf
    • https://uploads.strikinglycdn.com/files/c1768738-8ba9-4198-8077-fc1734e0dda8/which_river_turned_to_blood.pdf
    • https://s3.amazonaws.com/mikibetiv/58020296655.pdf
    • https://s3.amazonaws.com/venunamazozuzo/ben_10_video_game_free.pdf
    • http://kodabaguditu.rf.gd/duvikazoput.pdf
    • https://6754c94d-8795-460a-880d-d127bb37d4d4.filesusr.com/ugd/2383dc_a32735dd563d43e7a6aa5e6f0fbaea34.pdf?index=true
    • http://godidab.epizy.com/infectious_colitis_treatment_guidelines.pdf
    • http://suvapik.epizy.com/descargar_airconsole_hero_apk.pdf
    • https://s3.amazonaws.com/wetowuzuxit/bujedowaz.pdf
    • https://uploads.strikinglycdn.com/files/b4033be6-f365-4851-82a2-0ea7ab9fba60/munetosisoxiwagudi.pdf
    • https://uploads.strikinglycdn.com/files/a8942c67-2192-48b9-9976-0df620f754c7/64634062189.pdf
    • https://2b08ee71-c141-4a22-85ba-dc1f1cc141ce.filesusr.com/ugd/7ab50f_5a381faf13424844b21e9727209aa8e1.pdf?index=true
    • https://uploads.strikinglycdn.com/files/763d73d2-03a6-4ff6-a32a-9be973436b95/75836616405.pdf
    • https://s3.amazonaws.com/xoguwavosuje/89045296569.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f87e.bin
80c16c5f867a95733ac6c735e648afe0ce4412e13a1418e9ee425fd7af04edfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF87E 5480 bytes
font_01_sfnt_off00010aff.bin
7759518f0e7b6c32c785fcfa9118c80132e364fb6095c749611dd4732700a611		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AFF 11368 bytes

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