Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ddebfc954858448…

MALICIOUS

PDF

43.4 KB Created: 2020-08-11 19:36:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f3584755169e1d5587b3edc40dac55c5 SHA-1: 3b874af59a5db85cf3ff811d4e78c36ab8bebd29 SHA-256: 2ddebfc954858448cff944782ab838edca180960cd3a40572f689bd15d427ac9
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=dallas+arboretum+map+pdf In PDF document text
    • http://files.tastefulvoyages.com/uploads/1/3/1/4/131406977/pigufegobivesizapupu.pdfIn PDF document text
    • http://files.jillanebaros.com/uploads/1/3/0/7/130776883/8557707.pdfIn PDF document text
    • http://files.laurengracesmith.com/uploads/1/3/1/4/131483371/848490.pdfIn PDF document text
    • http://files.roejendradesigns.com/uploads/1/3/1/4/131406762/wugagumigejo.pdfIn PDF document text
    • http://jiroril.drsheldonbeauty.com/uploads/1/3/1/8/131871674/4b792423edf0b0.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/1/0431/4162/8072/files/27241030889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wijabogose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3825/0910/files/potion_of_vitality_5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1111/2092/files/vimadasojijupafuxow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2478/5313/files/11003583001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/15258526196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wudivilijekeroleve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/wonebupukegetelikero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/burunetewavonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8099/0366/files/91819174098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/53034185163.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_off00006cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC3 5324 bytes
SHA-256: 17ff297ff94f598e318d770b99e510d5f6ee594642eafb85e88c1d1a42f9bc7c
font_01_sfnt_off00007eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EBA 10068 bytes
SHA-256: af3393f8885ab7020c92605afb82e837bc05b59e50a06add7dfb836046e72fb8

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