Malicious PDF — malware analysis report

Static analysis result for SHA-256 095c32ead8f9d90a…

MALICIOUS

PDF

40.1 KB Created: 2020-08-28 11:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a25d2131eb3a6526a60feec65522bcc1 SHA-1: ace2b5045eb57dbf8e7b97c327cafc02f87432e1 SHA-256: 095c32ead8f9d90a82291379bfa901f2ac18bae0dabc5a2495c0c861e355d5bd
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The document body, though heavily obfuscated, contains the malicious URL and references to PDF files, reinforcing the lure.

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.ru/pify?keyword=el+camino+del+artista+julia+cameron+pdf
    • http://files.internationalflowartsday.org/uploads/1/3/1/6/131606128/punagavora.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0447/7422/8117/files/gokanefasegaxazizegu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8313/7178/files/2701466517.pdf
    • https://cdn.shopify.com/s/files/1/0432/8243/2160/files/bangalore_bmtc_bus_route_number_and_destination.pdf
    • https://cdn.shopify.com/s/files/1/0427/4287/4278/files/97009784926.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/nawenuvewedepajimiwif.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7654/files/pig_personality_test.pdf
    • https://cdn.shopify.com/s/files/1/0432/5759/4016/files/94752996448.pdf
    • https://cdn.shopify.com/s/files/1/0431/4326/6458/files/75242982211.pdf
    • https://cdn.shopify.com/s/files/1/0430/7959/8229/files/tifofali.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_off00005ce3.bin
d1b6aa31555a74ad3d2175ec58c1d0fbd2a7c2110b3c0f81b8e35da4f675477f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE3 5336 bytes
font_01_sfnt_off00006eee.bin
a9ad1d93143b0116247c58ce213d576a09bfc62f1f364a0b2290746c4df8a034		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEE 11332 bytes

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