Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb7423526789310…

MALICIOUS

PDF

75.1 KB Created: 2021-04-11 22:34:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6a0cabe143bfbf88f68c626eda9a2ba1 SHA-1: e11abdcc4ac5320d2ff7df75cf8c8d35cddac4a8 SHA-256: 2fb7423526789310c85a9d25b1e761483656d00ac573e3c909f2a5db8c4b8d76
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. It contains numerous embedded URLs, including one pointing to 'jumiwimov.ru' which is likely part of a phishing or malware distribution scheme. The PDF structure suggests it acts as a link farm, directing users to external, potentially malicious, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/strik?utm_term=acoustic+guitar+lessons+for+beginners+easy+songs PDF link annotation
    • http://leoidet.xyz/novenitamokakuvixedoxiwaiqfa9.pdfIn PDF document text
    • https://cdn.sqhk.co/kosenopelid/ghgcgei/nfl_network_on_spectrum_channel.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/56090413565.pdfIn PDF document text
    • http://misstourist.info/megan_maxwell_pideme_lo_que_quieras_wikipediaw07a2.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/jgmWRia/pepper_place_italian_restaurant.pdfIn PDF document text
    • http://brightshopbg.xyz/37999464751nl55o.pdfIn PDF document text
    • https://cdn.sqhk.co/fodibaniwe/7MI6TB8/extreme_speed_motorsports.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/eljhghb/ribibokesipunatav.pdfIn PDF document text
    • https://cdn.sqhk.co/rufosopufu/cTicL55/gukesu.pdfIn PDF document text
    • http://komarovskii.xyz/breeders_cup_pre_entries_past_performanceslhtn9.pdfIn PDF document text
    • https://cdn.sqhk.co/kisereta/gh6ecjc/sloth_from_zootopia_in_car.pdfIn PDF document text
    • https://cdn.sqhk.co/buruvalufe/ejbWWNJ/survival_craft_2_creatures_mod_download.pdfIn PDF document text
    • http://getfreecreditreport.info/luresajufs4ne.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/1270025210039se2.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eaa8e2f-0978-4540-a4f6-b92563d4cc1f/zosujudodevibojidosoboxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/487603ad-86f6-4d1b-af37-369e59032190/penguin_bio_wheel_100_not_spinning.pdfIn PDF document text
    • http://kepewitibafef.myartsonline.com/sunilid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/363d6970-8021-48db-86a0-7083ea02e57c/tcp_ip_protocol_stack_implementation.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_off0000e766.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE766 5280 bytes
SHA-256: 1a5af5ba78b67a562f002c0c1aa79f7f7ef5d4a8600ddcd3b70ca04b2092a457
font_01_sfnt_off0000f978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF978 11104 bytes
SHA-256: da104e9ea4872330c5a11ad3e16f5ab79a369d605861064dc0d97ba8fe1fd5d0

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