Malicious PDF — malware analysis report

Static analysis result for SHA-256 7196694956b0f9c9…

MALICIOUS

PDF

42.2 KB Created: 2020-08-21 23:26:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aba9fdfe52867f942c686d9ccb8e1a3d SHA-1: b8bbd487dbb7e84882157bc7456701b251142fa6 SHA-256: 7196694956b0f9c9a028f244a4827512a03d553a1686eb022f98d30ad7bfbaa9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document also contains a large number of links to other PDFs hosted on Shopify, potentially as part of a link farm or SEO manipulation tactic. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.cc/pify?keyword=aladdin+complete+series
    • http://vegeb.mizzodcast.com/uploads/1/3/1/0/131070161/fubotil-wiwabonafodi-rowizisifozut.pdf
    • http://files.storeyhallreunion.com/uploads/1/3/1/3/131380263/ac02f5c74e8.pdf
    • http://bamow.prime-runner.com/uploads/1/3/1/3/131379578/690016.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/4474/7929/files/possessive_form_examples.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5275/files/gaxolimoteto.pdf
    • https://cdn.shopify.com/s/files/1/0432/3649/1431/files/grocery_store_list_template.pdf
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/rotuvemifakevewabaxe.pdf
    • https://cdn.shopify.com/s/files/1/0428/3629/5836/files/xuzidunudojiguzazeboped.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/adhyatma_ramayanam_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0436/0781/8398/files/pumapesen.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068db.bin
365fb6705387ac3634a719a1a1d588b0d6999c6a8ee29383cee47c3cff5524ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68DB 5208 bytes
font_01_sfnt_off00007a6d.bin
c1ab5bb4b8f8e26f17118bac336d857c0c5f13a317546ca8fb290532e64a96db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A6D 9932 bytes

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