Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d42a9a1df2a61a7…

MALICIOUS

PDF

50.7 KB Created: 2020-08-13 22:17:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: deee14e9ae68375ef3f232f22341e94b SHA-1: bda2bc45c2b4673766b0c7d067f83f74dcd7d174 SHA-256: 9d42a9a1df2a61a7aaee1c9157b9dae56d31f99a1af550c245189959c46997ae
152 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.cc', which is used to obscure the final destination. The document body also contains this URL, alongside what appears to be a product name, suggesting a lure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs pointing to Shopify domains, likely for SEO manipulation or to host further malicious content. No scripts were extracted from this sample.

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=lanc%25C3%25B4me+g%25C3%25A9nifique+hydrogel+melting+sheet+mask
    • http://files.bellcosurveyingllc.com/uploads/1/3/0/7/130775701/3438184.pdf
    • http://files.leanwithluke.co.uk/uploads/1/3/0/9/130969368/nimuzezireroxenefos.pdf
    • http://files.ritztheatretoccoa.com/uploads/1/3/1/4/131406086/sugumepotetavigubu.pdf
    • http://files.drewgrahamart.com/uploads/1/3/1/6/131637606/milepikeromomur.pdf
    • https://cdn.shopify.com/s/files/1/0435/6787/4207/files/wimenijiwolonix.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29025511016.pdf
    • https://cdn.shopify.com/s/files/1/0434/5836/3544/files/fekelobinosamulivugav.pdf
    • https://cdn.shopify.com/s/files/1/0434/2956/0486/files/76881371474.pdf
    • https://cdn.shopify.com/s/files/1/0432/2787/3440/files/favepenevuvikakalurawe.pdf
    • https://cdn.shopify.com/s/files/1/0432/7286/3904/files/gapujijajeneruteb.pdf
    • https://cdn.shopify.com/s/files/1/0429/6438/5951/files/rubenubaki.pdf
    • https://cdn.shopify.com/s/files/1/0433/9580/9431/files/texas_instruments_ti-_30x_iis_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/7967/2735/files/nujipe.pdf
    • https://cdn.shopify.com/s/files/1/0434/6249/2310/files/antrenmanlarla_matematik_4_konular.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/vetegavekol.pdf
    • https://cdn.shopify.com/s/files/1/0427/4677/3660/files/metaphysical_poets_by_ts_eliot.pdf
    • https://cdn.shopify.com/s/files/1/0432/8095/7593/files/jotusinurowixevuwesisogi.pdf
    • https://cdn.shopify.com/s/files/1/0433/3905/5253/files/23485987391.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d2b.bin
179ca9be25190def2d469cbd553cd6176db31a983ffbe63bc90731dc69dcc2fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2B 5952 bytes
font_01_sfnt_off000080c6.bin
fe5bff86aa9e6a3c1a09d82e9f99023acc8335f2b0366e5180cdf12fc792f994		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C6 10836 bytes
font_02_sfnt_off0000a5a3.bin
18f56b7fae04e07bc119a468ad323bdda099da77b0772854d1c47cc1f39b9f3b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA5A3 16144 bytes

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