Malicious PDF — malware analysis report

Static analysis result for SHA-256 069f11676a4408e0…

MALICIOUS

PDF

68.8 KB Created: 2021-03-26 07:37:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ddf826c23e8e20d3b65222a65713660f SHA-1: b1891995674eb0e3112f081a28ad06348e58e81b SHA-256: 069f11676a4408e09ae381320b074bedf6e3ace0d400b020c760fed5fb02305a
136 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a phishing lure, specifically using an image to redirect users to a malicious SEO redirector. The primary malicious URL identified is vilenefex.ru. While no scripts were explicitly extracted, the presence of PDF_URI and PDF_SEO_UTM_REDIRECTOR_LINK heuristics strongly suggests a phishing attack vector, likely involving embedded JavaScript for redirection.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://vilenefex.ru/wix?keyword=mothra+larva+plush PDF link annotation
    • http://veviwumifuvemuz.mypressonline.com/how_does_the_book_thinner_end.pdfIn PDF document text
    • https://cdn.sqhk.co/pulisamog/iAighiO/shelter_island_hotels_ca.pdfIn PDF document text
    • http://sizegoduxuxa.mygamesonline.org/jeluxud.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/hilhjjg/movies_available_on_hulu_live.pdfIn PDF document text
    • http://copytoshka.ru/18183297458nisr6.pdfIn PDF document text
    • http://sukuwodexi.scienceontheweb.net/ipod_nano_7th_gen_review.pdfIn PDF document text
    • http://astrohelp.space/35759010335f3m4e.pdfIn PDF document text
    • http://bullbananavannaone.xyz/352728171497fmy5.pdfIn PDF document text
    • http://ontrade.top/396939666036rbyr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gezizefefififa/game_boxing_star_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/segujekize.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/zowasifi.pdfIn PDF document text
    • http://sewujajapivix.onlinewebshop.net/67331776483.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/kuleruzuzuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/fuligeredagikejagilivor.pdfIn PDF document text
    • http://kulebosux.myartsonline.com/13971532487.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 5

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_off0000ce99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE99 4972 bytes
SHA-256: d282d4285dbc5a40323c4df32783d8e58543fe74edb8ad0a81b5046b8ac9f3c4
font_01_sfnt_off0000df88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF88 11248 bytes
SHA-256: 1487d443b3fe389a7d1d8d0b60aa72d696eaebce0e5ce7ee33eeb7f1dba80569

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