Malicious PDF — malware analysis report

Static analysis result for SHA-256 f790a0b7a89ee029…

MALICIOUS

PDF

65.5 KB Created: 2021-03-17 21:03:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95ffdf1c10294f04b749d4c193a9f5de SHA-1: 75da2e336d3ef7160ca25e036c89651f68481967 SHA-256: f790a0b7a89ee029f2abd075b0bc91ec46fd8a36bfeaaef47106853089126007
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to "unblocked games", suggesting a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/wix?keyword=unblocked+games+dad+n+me
    • https://cdn.sqhk.co/gufemazibafi/ggihRhe/wix_customer_support_number_uk.pdf
    • https://cdn-cms.f-static.net/uploads/4455196/normal_6051c5e51a62e.pdf
    • https://cdn.sqhk.co/zoluxoni/ifhcgdF/sims_4_cheats_skills_robotics.pdf
    • https://static.s123-cdn-static.com/uploads/4480732/normal_5ffaebc73eb66.pdf
    • https://static.s123-cdn-static.com/uploads/4373016/normal_6000c416b3575.pdf
    • https://cdn-cms.f-static.net/uploads/4454299/normal_603177ff31cad.pdf
    • http://xexapitanegis.getenjoyment.net/fourier_cosine_transform_heat_equation.pdf
    • https://cdn.sqhk.co/dakagugi/Gjeihbx/word_swipe_pic_level_105_answer.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://5d3a357a-25b2-4459-9cd8-210b235f7b36.filesusr.com/ugd/45e30f_5586bd7634f5408ea5e9819723d605b0.pdf?index=true
    • https://e055bcc9-c4f1-4c6c-8dcb-0912bf54750f.filesusr.com/ugd/b4a829_679339155a444d41ad9eb570acd606af.pdf?index=true
    • http://mupisogedosido.epizy.com/bsge_hysteroscopy_guidelines.pdf
    • https://7ef5d8b8-74ac-4e0a-b0a0-fa61ca6462a8.filesusr.com/ugd/23e9be_deb6954db3944ecaa8f00c3c0661d727.pdf?index=true
    • http://zizujiton.rf.gd/what_parts_of_new_york_are_dangerous.pdf
    • https://bb74f61c-7045-47bf-9a7e-968101ee373e.filesusr.com/ugd/81ef4b_18502b3dfa59499aaa046ed46d384210.pdf?index=true
    • http://zijiwaras.onlinewebshop.net/vewiviganufiwawis.pdf
    • http://pizenusogusu.atwebpages.com/muscle_gain_diet_plan.pdf
    • https://6c036dbd-b327-4678-b778-de8a2ee7bb50.filesusr.com/ugd/ed64d2_cfc9f3eca17f4cffaadb326f0a6d99fb.pdf?index=true
    • 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_off0000c666.bin
ab209c6186d687e92e112a7326f7d3fb1b2319951eb59f5b37459759cf7d2ac9
pdf-font-stream PDF embedded font (sfnt) at offset 0xC666 5356 bytes
font_01_sfnt_off0000d894.bin
e8f41507f07a32efe4198f506a8c1d6f4fbab3c60d1fe3c8efb66125fdf14eae
pdf-font-stream PDF embedded font (sfnt) at offset 0xD894 9540 bytes