Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8b583307a4f6a40…

MALICIOUS

PDF

67.4 KB Created: 2021-01-17 21:54:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 1c5296dde42e208fdad29bfa6084f03a SHA-1: aef138d3bcea6207483a7bafd1d339b101f60a7a SHA-256: d8b583307a4f6a40268e55c1b6e6ac845982271c11e36d5421a680cda3353bf9
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains numerous links to external PDF files, many of which point to redirector infrastructure. The primary redirector URL is 'https://traffking.ru/123?utm_term=latitude+38+entertainment', which is likely used to funnel victims to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://traffking.ru/123?utm_term=latitude+38+entertainment In PDF document text
    • https://static.s123-cdn-static.com/uploads/4404723/normal_5ff8dc355fbaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393369/normal_5fbc953ecf529.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460251/normal_5fc774ebc3d6a.pdfIn PDF document text
    • https://cdn.sqhk.co/xafiguzi/cjhcVjj/45558828921.pdfIn PDF document text
    • https://xubivolimoba.weebly.com/uploads/1/3/0/7/130740090/2083924.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487625/normal_5fe5e5652f72d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465938/normal_5ff659ef9ea8b.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/Y0qigx7/latinetumodogerudewef.pdfIn PDF document text
    • https://mivodijabid.weebly.com/uploads/1/3/4/7/134732330/xonaj-woxoror-verinune-bawilefat.pdfIn PDF document text
    • https://cdn.sqhk.co/belumozobu/giiieZx/dan_the_man_game_mod_apk.pdfIn PDF document text
    • https://vulabomanuxuw.weebly.com/uploads/1/3/4/8/134857085/jatuvaneg-nuwebuduf-fupesifatilil.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/kibavutibeved/rental_check_in_check_out_form.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/ibm_api_connect_installation_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/super_bass_lyrics_video.pdfIn PDF document text
    • http://debetofewozuri.epizy.com/chalanachitra_video_songs.pdfIn PDF document text
    • http://lamiredej.epizy.com/lowefadaxagudos.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_off0000cba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBA7 5060 bytes
SHA-256: bdd5ddbbec8e8691ec0de9141433b20ccbf0332487a5661cc495c4def2468c3d
font_01_sfnt_off0000dcc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC9 10632 bytes
SHA-256: 48744f7adf76fcaaa06f3bea31e7959f9b2d5bd94a4f2aa5faf90aa114690c49

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