Malicious PDF — malware analysis report

Static analysis result for SHA-256 47480db65bb1282f…

MALICIOUS

PDF

110.2 KB Created: 2020-11-30 12:14:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 89c9fd839aa0364796010e55cbe02634 SHA-1: b742a93c83ade0d3f06f6995daafa7b06d7f0629 SHA-256: 47480db65bb1282fa76c0e9d79eca9e0cb45336522a406666e056566c941d2ea
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many pointing to SEO-optimized PDF hosting sites, suggesting a link farm or redirector strategy. One prominent URL, 'https://trafftec.ru/aws?utm_term=atomic+structure+practice+worksheet+1+answers', is flagged as a redirector, likely for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://trafftec.ru/aws?utm_term=atomic+structure+practice+worksheet+1+answers PDF link annotation
    • https://bitivomo.weebly.com/uploads/1/3/4/4/134478942/dedanetumeku.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/janodojivi/39560754675.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8300625c-ccc9-41b2-931e-888468459bc5/66602587493.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/2734661105.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6656b5f-1f45-4530-b610-3f989ed4d807/spidron_wikipedia_em_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c9c0ad0-ab26-49d5-9d9c-27e2008b0c59/jogutovuxilibekireduwero.pdfIn PDF document text
    • https://s3.amazonaws.com/kokesatodixon/apiculture_elevage.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/arabic_to_bangla_dictionary_file.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/apk_games_for_ipad.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e552ec917750a3d7e003/t/5fc34b5afa04221c7189d7e6/1606634330714/89572951698.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/reserusu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14383b88-b2f7-4865-848f-4497c98b6a6c/xavadukijiliva.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc29a239698b02c7f2b7c55/t/5fc3a92a3c6ccf69f3ce6893/1606658347368/stoner_glass_cleaner_gallon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4972079a-05d5-4b14-bac4-abebcb7cea1e/jijexagegep.pdfIn PDF document text
    • https://s3.amazonaws.com/pezofut/tumejolagise.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17728 5340 bytes
SHA-256: 73fc2254bf4f8e341cecfe7c923b07398301569c28394b6f13da0d9cd3b1fa84
font_01_sfnt_off0001893d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1893D 9904 bytes
SHA-256: ea173eae746e7eb89be5824d47076bac0239fcafccb88a3ff31407af5694d743

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