Malicious PDF — malware analysis report

Static analysis result for SHA-256 417064e7739984c6…

MALICIOUS

PDF

53.3 KB Created: 2020-08-10 22:13:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a508b5554bcbf800e24c2ac21ba413c SHA-1: de7075855928e8221289459e44ddfee79fa5a994 SHA-256: 417064e7739984c6798d25a339064a4ff8903ff231a66991d3e76a67d380deef
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a 'cash flow statement analysis project PDF'. This redirector likely leads to further malicious content or exploits. The document also exhibits characteristics of a link farm, with numerous embedded links pointing to external PDFs, suggesting a broad distribution or SEO poisoning tactic.

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/pify?keyword=cash+flow+statement+analysis+project+pdf
    • http://worus.savingendangeredspecies.org/uploads/1/3/0/8/130814328/mepitarew_viwopeselolap_nitiwovugajikem.pdf
    • http://merogegoj.mw-earrings.com/uploads/1/3/1/3/131379179/belogemizudoxa-mulebemepetizik-lorujap.pdf
    • http://files.sunzsafe.com/uploads/1/3/0/7/130739081/7302166.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/depij.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/runuwadobona.pdf
    • https://cdn.shopify.com/s/files/1/0432/9373/7118/files/24825346199.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/25712617007.pdf
    • https://cdn.shopify.com/s/files/1/0432/2672/6568/files/xaromu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8865/9100/files/contenidos_factuales_conceptuales_procedimentales_y_actitudinales.pdf
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/67556589577.pdf
    • https://cdn.shopify.com/s/files/1/0436/9943/7721/files/18013922171.pdf
    • https://cdn.shopify.com/s/files/1/0430/5109/0077/files/bayesian_statistics_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/epson_tm_t88iv_driver.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0526/files/49456958229.pdf
    • https://cdn.shopify.com/s/files/1/0434/3287/0037/files/sariduxozufibavureratuw.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000092d1.bin
fea760e9287f24ce261adbd2a899b2ebb5bce7f736e2f839fafd812fd2d14404
pdf-font-stream PDF embedded font (sfnt) at offset 0x92D1 5572 bytes
font_01_sfnt_off0000a5b4.bin
ca7c1eb5070aa6e1fb920b9c0cb229ac5f36a3036510bc069e3dd5dab288fed5
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5B4 10124 bytes