Malicious PDF — malware analysis report

Static analysis result for SHA-256 37e1b9f0a77983f2…

MALICIOUS

PDF

79.9 KB Created: 2021-04-05 05:23:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6911f1d8d29bb797051700305e767409 SHA-1: 92cc91c1eb00d3aca648fd62438f6c575a2a62a7 SHA-256: 37e1b9f0a77983f2170ad3ab631725a9ad6441a7426dc42b8def81b633b27412
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 as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an external URI pointing to a URL that appears to be part of a link farm, suggesting a phishing or scam operation. The document body, though heavily obfuscated, contains text related to graphic designer costs, likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://leonvi.ru/strik?utm_term=how+much+to+pay+a+graphic+designer+per+hour PDF link annotation
    • http://suvuxivenorum.mypressonline.com/livujakigebamevatotogo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453889/normal_60261a63a9d3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477408/normal_606623daa29e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419628/normal_5fd1a988dcb7c.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugituxi/djbgghb/reversible_vasectomy_price.pdfIn PDF document text
    • https://cdn.sqhk.co/sekigizakeku/BhgWjgA/abalone_meaning_in_korean.pdfIn PDF document text
    • http://mmuuue.space/28876031945fydo5.pdfIn PDF document text
    • http://laitlabs.pro/how_to_use_organic_apple_cider_vinegar_with_mother_for_weight_lossk2n7y.pdfIn PDF document text
    • http://dexaputanit.mygamesonline.org/nonakagilefe.pdfIn PDF document text
    • https://cdn.sqhk.co/zozimevoket/eQMLjgb/super_tank_rumble_apk_mod_game_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375909/normal_5fe0cd54e7376.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377102/normal_6041bbed1ed34.pdfIn PDF document text
    • http://winsbig.space/905607070241x2dx.pdfIn PDF document text
    • http://teplotronic.ru/91141091503t1wis.pdfIn PDF document text
    • https://cdn.sqhk.co/senuziker/Ahfll8x/44716854732.pdfIn PDF document text
    • https://cdn.sqhk.co/davunosedepa/aBgdxja/karemobagifinemimi.pdfIn PDF document text
    • http://rubeatyshop.xyz/cadence_allegro_16._6g1v91.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/5a7fd241-ce83-412e-9ac7-3349f28ac6cd/73229958844.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e666c497-6686-442c-a47f-d7a9aefdafc6/attack_on_titan_season_4_wallpaper_4k_phone.pdfIn PDF document text
    • http://memepev.myartsonline.com/tuwuroponuwidesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b12e0fe7-d279-435c-9f84-8fc184e3cee6/the_fountainhead_author_rand_crossword_clue.pdfIn PDF document text
    • http://jigisasamupor.onlinewebshop.net/44095884638.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3fa371a-b392-42aa-b434-8b91c284b0f8/95768548414.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_off0000f7b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B6 5608 bytes
SHA-256: b58615227eac43f564db414c554e04af3745a52fa8c962bc3e1a352677df3cc0
font_01_sfnt_off00010ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AB5 11372 bytes
SHA-256: de3a969f36306d11d1b42eafe83dd831ca54159e1d9c11fb5846e9f679b540a4

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