Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d1d5bd5bdeb39df…

MALICIOUS

PDF

52.6 KB Created: 2020-09-01 06:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96f8c0315d91878280dd8307acb7882d SHA-1: 6eac14974832204051c775d6aa2203e0f403b5b4 SHA-256: 0d1d5bd5bdeb39dfda4f5fcd0e05e1afbcfff7aad9f608c67820016190748258
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. One prominent link, 'https://ttraff.com/wix?keyword=pathfinder+intimidate+guide', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Pathfinder intimidate guide' and the authoring application, aligning with the link's apparent purpose. The ML classifier strongly indicates maliciousness.

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.com/wix?keyword=pathfinder+intimidate+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/14190610848.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/fazunajixon.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/6532386097.pdf
    • https://cdn.shopify.com/s/files/1/0467/9955/2663/files/lujelixipotozis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6119/files/4465221465.pdf
    • https://cdn.shopify.com/s/files/1/0441/2017/8840/files/the_gutter_ds2.pdf
    • https://cdn.shopify.com/s/files/1/0462/4849/3205/files/cheeni_kum_songs_starmusiq.pdf
    • https://cdn.shopify.com/s/files/1/0435/6633/4111/files/paxoduveruguvoferela.pdf
    • https://cdn.shopify.com/s/files/1/0436/9599/7096/files/saurashtra_university_b._com_sem_5_books.pdf
    • https://cdn.shopify.com/s/files/1/0440/7967/7590/files/dafuvesidosozetekobibetok.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/lekopunijix.pdf
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/guides_uniform_shop.pdf
    • https://cdn.shopify.com/s/files/1/0428/6939/1527/files/38496043097.pdf
    • https://cdn.shopify.com/s/files/1/0436/6457/2569/files/72216747146.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_off00009128.bin
b0565f8c8c8aa23fc1cc8c6e7e865a7bd5a42c6b3ec07cb3a659927273b63505
pdf-font-stream PDF embedded font (sfnt) at offset 0x9128 5112 bytes
font_01_sfnt_off0000a267.bin
901d07e4338fcef76d5e33117300a2e8db3c3f946f3f3f67a683b23213e53333
pdf-font-stream PDF embedded font (sfnt) at offset 0xA267 10364 bytes