Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f270a3b02860d68…

MALICIOUS

PDF

89.7 KB Created: 2021-03-02 21:01:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f782b2f85fc23e30c72fb2af96ed72ae SHA-1: bf1e2fb6646a2ff8015c0412b7fc7a1009cb6a45 SHA-256: 5f270a3b02860d68eceb1e2212618632835655b879748ede221225a6269b3ddf
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to a product manual. The presence of external URIs and the link farm heuristic indicate an attempt to redirect users to malicious content, likely for phishing or malware delivery.

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://xezojetit.ru/wix?keyword=whirlpool+double+oven+akz161+manual PDF link annotation
    • https://fuwowomazusora.weebly.com/uploads/1/3/4/0/134000162/kelilupijegakizomipe.pdfIn PDF document text
    • http://fefiwizam.sportsontheweb.net/83021719207.pdfIn PDF document text
    • http://mikovil.mywebcommunity.org/29264758876.pdfIn PDF document text
    • http://gigurokubi.66ghz.com/colorful_butterfly_images.pdfIn PDF document text
    • http://dvertsoff.ru/81080911101bl4e.pdfIn PDF document text
    • https://cdn.sqhk.co/kexofebiziv/iisgjXr/moon_patrol_game_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416792/normal_5fefab462e892.pdfIn PDF document text
    • http://academic-club.ru/971433234128dcvd.pdfIn PDF document text
    • http://itwow.info/hashar_full_punjabi_movie_in_hdnthm0.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/Xggiche/35718800440.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481423/normal_601d74f7df349.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/what_is_the_order_to_watch_the_lord_of_the_rings_movies.pdfIn PDF document text
    • https://livuwijonirib.weebly.com/uploads/1/3/4/7/134732661/f286c6f6117131.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/cgcYEdP/41910997976.pdfIn PDF document text
    • http://netewe9.xyz/tibaji9js4g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://butadiviwev.rf.gd/bingo_application_free.pdfIn PDF document text
    • http://fofeparulofiz.rf.gd/dexada.pdfIn PDF document text
    • http://nilidori.rf.gd/neviwok.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_off00011c47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C47 5552 bytes
SHA-256: 1040a635eb7f2b674b5b78ea858f1cd1fb221ed627b22d29b0b77b66f48aece4
font_01_sfnt_off00012f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F15 13312 bytes
SHA-256: a0909b2e52beb965a241165d5148131e34a15d1bb3c79c8916c169489906e3ae

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