Malicious PDF — malware analysis report

Static analysis result for SHA-256 89e04af10d4e71da…

MALICIOUS

PDF

78.9 KB Created: 2021-03-12 00:59:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 73315d049e2c5f123deb90a2f8fbd5e4 SHA-1: 28950efab347a35f8ee869e61f04a368f1599430 SHA-256: 89e04af10d4e71da1f5dd39462d01b719f78f849f547156a65ec920ecbbde391
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous external links, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a link farm designed for SEO manipulation, likely to obscure the true malicious intent. The embedded URL 'https://lozipotod.ru/123?utm_term=us+trucking+industry+report' suggests a phishing lure related to the trucking industry. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/123?utm_term=us+trucking+industry+report PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4483072/normal_603d52aa2e212.pdfIn PDF document text
    • https://cdn.sqhk.co/rujoremebi/0Ksjchj/lizoro.pdfIn PDF document text
    • http://sopugepibimel.mypressonline.com/zesumonewawafujidozimi.pdfIn PDF document text
    • http://chelamela.org/kevuzerolorojixupasi8cpsg.pdfIn PDF document text
    • http://ludshop.xyz/vukobz2t74.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/hifLRjd/tavemifud.pdfIn PDF document text
    • https://cdn.sqhk.co/rudixika/fmjhKgf/crush_the_castle_1_players_pack.pdfIn PDF document text
    • http://hookup754.fun/ruwidopexakajoellb4.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/HihQtzS/maxpreps_soccer_playoffs.pdfIn PDF document text
    • https://cdn.sqhk.co/dutararopat/DARidPx/63686065658.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383321/normal_5fe02a2ae68a0.pdfIn PDF document text
    • http://bcpzonasegura10beta-viabcp.com/our_god_reigns_israel_houghton_guitar_chords2g6h0.pdfIn PDF document text
    • http://50offshop.info/statements_of_financial_positionyoojl.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisimak/qjijjhc/88344077916.pdfIn PDF document text
    • https://cdn.sqhk.co/tilafukefuwe/4jeicZl/how_to_say_hi_in_chinese_translation.pdfIn PDF document text
    • https://cdn.sqhk.co/kixepijap/Qii00Ab/63412141724.pdfIn PDF document text
    • https://cdn.sqhk.co/piwixesiwufo/jajcift/pixel_car_racer_money_hack_2019.pdfIn PDF document text
    • http://zumewidife.mygamesonline.org/diy_gun_shooting_bench.pdfIn PDF document text
    • https://cdn.sqhk.co/zisujidixa/daRk3gc/bomatew.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rorazizaxaf.atwebpages.com/romance_of_the_three_kingdoms_13_switch_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06a47c55-3b98-4176-98e8-986ff53f6635/47530744472.pdfIn PDF document text
    • http://ginowane.onlinewebshop.net/sjcam_sj4000_wifi_firmware_v1.8.2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c27bb591-7a74-48a2-8fc4-2a08261a1c78/facebook_page_live_chat_help.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF711 5156 bytes
SHA-256: 180b4c8f399843ab5c1e493a4e08a6ffe575638176900ce10dbeeb82d4d78282
font_01_sfnt_off000108be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108BE 11112 bytes
SHA-256: 1374d9e0b266720a786c8917b3c8e87bfe47aecdf2554ffbffb70807c4e5739e

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