Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9007a97139f866c…

MALICIOUS

PDF

42.2 KB Created: 2020-08-09 18:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5bf9437ada7be162af017fdcb8d20fcb SHA-1: 34a1bacbfc575d682bff08c1cbd7257df5c01479 SHA-256: f9007a97139f866c9533236e0099c95e35d786dace6a140fda1588f643341401
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.ru/pify?keyword=past%25C4%25B1rma+nedir+pdf In PDF document text
    • http://rimalalim.bumbleandsprout.com/uploads/1/3/1/6/131637254/newujogewiwi.pdfIn PDF document text
    • http://files.secondlookthrift.com/uploads/1/3/1/4/131408942/4233588.pdfIn PDF document text
    • http://moniwexi.hendrickscountymrc.org/uploads/1/3/1/3/131383283/noxepa.pdfIn PDF document text
    • http://files.theyogaterminal.co.uk/uploads/1/3/1/4/131409861/tegepijasajanosopize.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/rejomakifenaxeguvovenan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lasuzopaxikabade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6274/7548/files/32881896802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9231/1206/files/ditedojuzemepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66689816557.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3932/4325/files/cycling_jersey_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2430/8630/files/97841022407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1611/files/segazodipepipuzowedun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/basezubapufiveforuze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2931/4206/files/71158905644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/92206752811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8199/0295/files/luduvi.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_off000063cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63CD 5188 bytes
SHA-256: a6e9acc0d54b9b5748169553ebdf5d80b1b374222a0530f59114fefaab22f8c5
font_01_sfnt_off0000755f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x755F 11856 bytes
SHA-256: b9cc886cc17cafbfb2e7316e83a2dd9089f3fe0404cb5f72a0bc7eeef35cd0d7

Open this report in the interactive analyzer, or submit your own file for analysis.