Malicious PDF — malware analysis report

Static analysis result for SHA-256 448283e4904731df…

MALICIOUS

PDF

58.3 KB Created: 2020-12-21 10:22:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6406862f749751fa0bfb31a0e09b4f45 SHA-1: c6eac319ebbaf81bdbd60bac131440db415c4df3 SHA-256: 448283e4904731df2fb5451659c365a43d8abfb248eedf74875147eebe36c205
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains heuristics indicating it is a malicious redirector and a phishing lure, specifically mentioning an SEO redirector. The embedded URL `https://ggtraff.ru/123?utm_term=rodrigo+diaz+de+vivar+crossword+clue` is flagged as malicious. Although no scripts were explicitly extracted, the nature of the heuristics and the presence of a malicious URL strongly suggest an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://ggtraff.ru/123?utm_term=rodrigo+diaz+de+vivar+crossword+clue In PDF document text
    • https://static.s123-cdn-static.com/uploads/4426677/normal_5fdd60032e5f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385853/normal_5fde5318ce10a.pdfIn PDF document text
    • https://jamafijuzu.weebly.com/uploads/1/3/1/4/131437216/a3babf9d116ff55.pdfIn PDF document text
    • https://mubuzetuwifo.weebly.com/uploads/1/3/4/7/134703000/sefujolaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5fa1c1e46abba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459055/normal_5fbbdf1eb79a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371524/normal_5fb2959f91677.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/jivuxo/858478818.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/nz_tenancy_bond_refund_form.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/33895602650.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/mekajimekanexite.pdfIn PDF document text
    • https://s3.amazonaws.com/nufidibodudulad/64652991944.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/merit_english_amharic_dictionary_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/90584196894.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_off0000a9ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9ED 5316 bytes
SHA-256: 67ad84db661e8097d454494fa064e0291f72875ce7b81205591b5001c902f9b8
font_01_sfnt_off0000bc31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC31 9420 bytes
SHA-256: deb27a8d95de831b31fd769d8dcdb3336b2d6a6ba588a7355ce780f213e7bf01

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