Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6669c58da35a332…

MALICIOUS

PDF

79.9 KB Created: 2021-03-15 00:35:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3088182fcb7f884a5b84ac5ddab16f08 SHA-1: d851bcc3632e8a3d090a75e9d3223a29b779566d SHA-256: e6669c58da35a3326ae2d82b77b38ef116ba3411bb0a6f685847feb193f8238e
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 a large number of external links, many pointing to other PDF files, suggesting a link farm or SEO manipulation tactic. One of the primary URLs, 'https://xezojetit.ru/award?keyword=rolling+stone+500+greatest+songs+of+all+time+pdf', is likely part of a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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-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://xezojetit.ru/award?keyword=rolling+stone+500+greatest+songs+of+all+time+pdf
    • http://dutarotanazosuv.medianewsonline.com/94678470011.pdf
    • http://tokiridevifo.medianewsonline.com/awakening_the_heroes_within.pdf
    • https://gorogonib.weebly.com/uploads/1/3/0/7/130775466/1431025.pdf
    • http://bagerisevi.scienceontheweb.net/gupurovazoge.pdf
    • http://vertitribe.store/gewabilipafotcsx24.pdf
    • http://form-copyrightservices.com/75594559324on9v5.pdf
    • https://wudowured.weebly.com/uploads/1/3/0/8/130873715/jagalagakudadugov.pdf
    • http://pixell.store/define_the_term_derivational_affixxgsh0.pdf
    • http://kagaromorin.medianewsonline.com/suzilan.pdf
    • http://vodabutopidaru.getenjoyment.net/how_to_loosen_harness_on_evenflo_car_seat.pdf
    • http://leftoutclub.com/why_did_alliances_cause_ww1v2jnr.pdf
    • https://gawokuvaz.weebly.com/uploads/1/3/4/6/134656265/1177450.pdf
    • http://mon-compte-cmb.best/6720930212307rip.pdf
    • http://vobajujabu.mywebcommunity.org/37993929572.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d050b9da-bb24-4b3c-9c07-cfffe3e22be6/dragon_age_origins_awakening_best_rogue_specializations.pdf
    • http://gixopiv.onlinewebshop.net/1843143920.pdf
    • https://uploads.strikinglycdn.com/files/182b3183-66f7-41f6-a0bf-210e0b305d1d/lirr_train_schedule_port_washington_line.pdf
    • https://uploads.strikinglycdn.com/files/6bc94de1-b70f-4ecf-b446-11262fc1c785/can_you_make_a_free_wordpress_website.pdf
    • https://uploads.strikinglycdn.com/files/f98ee3fc-32e1-4829-93b2-ce5e811f4b02/the_fall_guy_intro.pdf
    • http://rulamiji.onlinewebshop.net/56863560966.pdf
    • https://uploads.strikinglycdn.com/files/e614c6d4-736c-4ba7-bd5d-cd46e6b30da3/4543229113.pdf
    • https://uploads.strikinglycdn.com/files/92ba7cd8-37f0-4864-a3f3-c3e701ea4834/13518049545.pdf
    • https://uploads.strikinglycdn.com/files/7215c055-560a-4054-943f-708b1c83558a/which_is_best_wing_chun_or_taekwondo.pdf
    • https://uploads.strikinglycdn.com/files/0f78e019-eec9-4dcf-96c3-d58a177f57fd/gunajigezigujejalu.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_off0000f7b0.bin
817ce7a43a01fd6eb2d732a8303b15cae5db4889b345c19d82e8c2845d813214		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B0 5632 bytes
font_01_sfnt_off00010ad1.bin
0b8194105a5a5eb552e7f1ee2c004aee33809108212a9de6fa9a5fc15312bab3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD1 10936 bytes

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