Malicious PDF — malware analysis report

Static analysis result for SHA-256 485b02bc014600f7…

MALICIOUS

PDF

81.3 KB Created: 2021-03-14 12:15:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4478af7ca0038b15f33687ee230f85f1 SHA-1: ed7060901ceee45b90c570a678d7ed3875a956d3 SHA-256: 485b02bc014600f794af3f03f786419552e356b6c1fb305b2dfff8b0d7f9c9fc
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, specifically one pointing to 'golowaki.ru', suggests a phishing or malware distribution lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

Heuristics 4

  • 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://golowaki.ru/award?keyword=strategic+management+pdf+download
    • http://wunuwivibegajim.22web.org/94984973284.pdf
    • https://cdn-cms.f-static.net/uploads/4463809/normal_604327daa303a.pdf
    • https://cdn-cms.f-static.net/uploads/4487658/normal_600cb65100674.pdf
    • http://nitalesilafatem.22web.org/what_are_some_examples_of_similes_and_metaphors.pdf
    • https://cdn-cms.f-static.net/uploads/4401517/normal_5fe62d9055a7e.pdf
    • http://mamunetosi.iblogger.org/why_does_my_whirlpool_fridge_keep_beeping.pdf
    • https://static.s123-cdn-static.com/uploads/4485149/normal_5fdd868a7c67d.pdf
    • https://cdn-cms.f-static.net/uploads/4407756/normal_604ce33b5810b.pdf
    • https://static.s123-cdn-static.com/uploads/4464539/normal_5ff091482a12e.pdf
    • https://static.s123-cdn-static.com/uploads/4476150/normal_5fdf3b08b4c4e.pdf
    • https://static.s123-cdn-static.com/uploads/4374198/normal_5fee7e385b598.pdf
    • http://fexewivu.iblogger.org/98979944167.pdf
    • http://dowelatevitik.22web.org/ahuyentar_avispas_de_forma_natural.pdf
    • https://cdn-cms.f-static.net/uploads/4456663/normal_6017430baa44f.pdf
    • https://cdn-cms.f-static.net/uploads/4386848/normal_602c99eddcf06.pdf
    • https://static.s123-cdn-static.com/uploads/4420039/normal_5fc626f345b1d.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c5346ee2-137b-4e32-9ec0-c63a3517f692/womokedavepikuzarixuzifu.pdf
    • http://tizanuzija.epizy.com/zetubigubojepojijow.pdf
    • http://rujemivegelap.epizy.com/57130778959.pdf
    • https://uploads.strikinglycdn.com/files/946cde1b-4737-48e3-95f6-aedca2fe4044/do_washers_have_a_reset_button.pdf
    • https://uploads.strikinglycdn.com/files/73298423-c550-4a8f-ab80-f8be6168f291/the_vegetarian_novel_meaning.pdf
    • https://uploads.strikinglycdn.com/files/dcada593-f57d-4198-b198-87e2a72ea66d/voravadosotimidufituzodon.pdf
    • https://uploads.strikinglycdn.com/files/1bf8cf7f-138e-4a10-9acd-dfc6d1a3b189/vexamalinodogom.pdf
    • http://kuviwobabevi.epizy.com/16709832793.pdf
    • http://kituvofaxur.epizy.com/47233734897.pdf
    • http://tipakixulo.rf.gd/label_templates_10_per_sheet_avery.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_off00010111.bin
ff5e440d8ceae23a3a70c5b5d5eaf3949fd737c4003b7d2887dd13304348c436		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10111 5492 bytes
font_01_sfnt_off000113c3.bin
c280bbdf8eb566a605fdcda3621877845acb19354bb77b1d3de1848d65f4d9bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113C3 10436 bytes

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