Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0f88102747bd250…

MALICIOUS

PDF

92.8 KB Created: 2021-03-14 07:30:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c377c6ee7eb3e7ee20ccfd5e557c8ed1 SHA-1: 99409315e0a45b576065c5b01aa8d856fa2b9658 SHA-256: a0f88102747bd25057b6687b6382ba82605fc7f05afd6e43c1fa26aaee6e919f
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/strik?utm_term=the+selection+book+series+tv+show PDF link annotation
    • http://vvinorama.website/icse_class_6_english_grammar_worksheets0r7wb.pdfIn PDF document text
    • http://vitalia-transports.com/army_toys_town_mod_apk_android_10muc4.pdfIn PDF document text
    • http://educationonline.website/ninja_van_driver_iosdvfsb.pdfIn PDF document text
    • http://dontbeshy.xyz/sadanaqi7w.pdfIn PDF document text
    • http://gufutaca1.xyz/fender_champion_100_watt_reviewdl5li.pdfIn PDF document text
    • http://onlinetiser.website/xekerogofagibaru3ml6h.pdfIn PDF document text
    • http://topcreditcheck.info/boat_safety_equipment_requirements_victorianyg0z.pdfIn PDF document text
    • http://digitaloffice24.ru/45140442815em6vu.pdfIn PDF document text
    • http://fullhp.info/aashto_lrfd_bridge_design_specifications_8th_edition970kk.pdfIn PDF document text
    • http://fenellalucynelle.info/awards_ceremony_program_templateqvw10.pdfIn PDF document text
    • http://haifaiv.ru/jevuzufagzwji1.pdfIn PDF document text
    • http://otomail.business/96634865257nkzb3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kexeban.rf.gd/royal_caribbean_drink_package_coupon_2019.pdfIn PDF document text
    • https://0e733887-fd72-4d21-8b10-0a39cafbc931.filesusr.com/ugd/1e4d10_72896cb3e70c4aa0b81856e7dbc7b117.pdf?index=trueIn PDF document text
    • http://fedukuto.epizy.com/how_to_help_a_teenager_with_anxiety_in_the_classroom.pdfIn PDF document text
    • https://aa6d2f86-95e2-42cc-897e-6bbd71c3a116.filesusr.com/ugd/78daac_a4d58a2f3d844390961dc21f8bbb1a05.pdf?index=trueIn PDF document text
    • https://b4e79a3f-0083-4b26-8056-4fe87fb46dfd.filesusr.com/ugd/332c1b_3ff69e7d7c5148eba665396c025062a6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/free_english_worksheets_year_1_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/90207854590.pdfIn PDF document text
    • http://pumovumibabir.epizy.com/refrigerators_thermador_freedom_collection_t36it901np.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/when_we_feel_young_lyrics_when_chai_met_toast.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D0B 4980 bytes
SHA-256: d8957484024a59a7e11953665808c331ee06e113b6b19bc7a8a34e3d28a45014
font_01_sfnt_off00013e10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E10 11280 bytes
SHA-256: 9133a81cb8d61a31be3e35196a438180806a54511ae0ac4bc6d974559cf2d217

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