Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd13699977a379a…

MALICIOUS

PDF

80.2 KB Created: 2021-05-13 22:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: a5e25bd0a3d94b06a12d75c1ec04ddb6 SHA-1: ccce5982d7152bd16e63cea69a4a2703e22398de SHA-256: 7dd13699977a379a3f64d8f240368345ad192d3cb1b77c3494cdfb7b2adedcec
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains numerous external links, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, suggests a lure related to legal or financial matters. The presence of embedded URLs indicates an attempt to redirect the user to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/strik?utm_term=how+to+file+for+letters+of+testamentary PDF link annotation
    • https://cdn.sqhk.co/nosuterib/F946Xgj/crystal_clear_rom_hack_guide.pdfIn PDF document text
    • http://marketeuro.pro/mumeje24p1w.pdfIn PDF document text
    • http://gtomishebs.xyz/facebook_ads_reporting_api7vgs8.pdfIn PDF document text
    • http://all-casino.xyz/1821642836209cty.pdfIn PDF document text
    • https://doxezudira.weebly.com/uploads/1/3/0/7/130739714/6950475.pdfIn PDF document text
    • http://goldotzyv.ru/how_does_tcp_ip_protocol_link_to_the_application_layerhdgx8.pdfIn PDF document text
    • https://kexejimeso.weebly.com/uploads/1/3/4/0/134096016/kekugogi.pdfIn PDF document text
    • http://mmmuuuue.space/tawunodaa1o7u.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/0hdjihc/39566352662.pdfIn PDF document text
    • http://itverys.space/mesiloroxotemaxijofosan2gyn.pdfIn PDF document text
    • http://allwoman.site/dopixir2vkrf.pdfIn PDF document text
    • http://ipai.online/what_is_natural_movement_fitnessbxys2.pdfIn PDF document text
    • http://prizinsta.online/10287232978s3kcb.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/3f609286-40fe-447a-a439-06e2020bf061/what_is_a_southern_gothic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/314110e7-d933-4f99-ada6-11c906221636/84604158287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b181313-c7fc-4404-9990-a614c24439c8/92087299293.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0d0a369-64e8-42ff-a588-2396d5cc0e4b/how_many_days_is_forklift_training.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8685589-8721-4bfd-bf43-67d4e443cefe/chick_fil_a_scholarship_reddit.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_off0000fd36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD36 5068 bytes
SHA-256: 891156d5cc37d37329921b0fbc021a665096fa1b9c7649480d0ce2713d015530
font_01_sfnt_off00010e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E73 10844 bytes
SHA-256: b19da965048a7bf4f01131e42764632d92de325190cfc5d9920a2d6ba70e3526

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