Malicious PDF — malware analysis report

Static analysis result for SHA-256 b626ab17ea83059b…

MALICIOUS

PDF

74.7 KB Created: 2021-02-22 16:16:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5b6ba9d939ec0ad5bc3d1173ee98b50a SHA-1: 29c477ecb21911e038f194d2c25cab016bf1c83d SHA-256: b626ab17ea83059b418978b72760b28ad0444d9710613ffc9e777b2dc0709d27
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9993

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://jottigo.ru/wix?keyword=sight+vs+blindness+thesis+statement PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389792/normal_5fe88ffd7592c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480728/normal_5fe9319fd9c81.pdfIn PDF document text
    • https://nijubalalo.weebly.com/uploads/1/3/1/4/131453980/dadozotorumisuxe.pdfIn PDF document text
    • https://nakigere.weebly.com/uploads/1/3/4/6/134608851/7740229.pdfIn PDF document text
    • https://pugufatafa.weebly.com/uploads/1/3/5/9/135967981/7909792.pdfIn PDF document text
    • https://cdn.sqhk.co/xeposetuge/hfmqhbE/ice_hockey_goalie_wallpaper.pdfIn PDF document text
    • https://muxetomanudone.weebly.com/uploads/1/3/1/4/131406273/70231fe9dadd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482190/normal_5fd82923e07cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421478/normal_5fdb2a1f79474.pdfIn PDF document text
    • http://fogimikolasot.iblogger.org/usda_full_form_in_education.pdfIn PDF document text
    • https://cdn.sqhk.co/ketalidukepi/9wifPjd/stick_battle_fight_mod_apk_android.pdfIn PDF document text
    • https://fodivavix.weebly.com/uploads/1/3/1/4/131483454/9942884.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386609/normal_5fcdae3084840.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/vUZAjdI/godutijom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475563/normal_5fec840ea07fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368962/normal_602aad1210145.pdfIn PDF document text
    • https://cdn.sqhk.co/nedupugifuka/0HgjP90/my_dream_lottery_house_somerton_park.pdfIn PDF document text
    • https://kexejimeso.weebly.com/uploads/1/3/4/0/134096016/ketep_dazag.pdfIn PDF document text
    • https://jetireduru.weebly.com/uploads/1/3/1/4/131453335/067d0ca6aba618.pdfIn PDF document text
    • https://zodosixuwe.weebly.com/uploads/1/3/4/8/134863902/janemasesoraj-lemesi-bomulemus.pdfIn PDF document text
    • https://suxapenogabako.weebly.com/uploads/1/3/4/6/134602080/7884647.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mafefelanepule.epizy.com/65253493928.pdfIn PDF document text
    • http://pijularof.epizy.com/30627476823.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_off0000e79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79A 5444 bytes
SHA-256: 497d1e40a7d9e969b8f536d2d34fbb605940c938cc36e4d5e109314aab91e87e
font_01_sfnt_off0000fa02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA02 10380 bytes
SHA-256: 5da6050135daa432067827bd8fe79630cfe32fb5af80c800cf4821131832f7eb

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