Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ef77193068eed1…

MALICIOUS

PDF

44.7 KB Created: 2020-08-12 05:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c20122d0105d8b28e371a65886d79fe SHA-1: dcccb452842888163852abab171fd1648cf198d7 SHA-256: 30ef77193068eed17b868a9b83c28c754587159823908d3a340ee3888ec33f6c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. One critical heuristic firing indicates that the document links to a known malicious redirector infrastructure at `https://ttraff.ru/pify?keyword=carbonisation+of+coal+pdf`. This suggests the document is part of a link farm designed to drive traffic to malicious sites, likely for phishing or malware distribution.

Heuristics 3

  • 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.
  • 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=carbonisation+of+coal+pdf
    • http://files.nyswip.net/uploads/1/3/1/4/131408954/3240757.pdf
    • http://files.spiralofcooperation.com/uploads/1/3/1/4/131407357/39595.pdf
    • http://files.menshairreplacementnc.com/uploads/1/3/1/6/131606257/a673c8ca6b58c70.pdf
    • http://files.studiodig.com/uploads/1/3/1/8/131856146/0227cd0db.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kekiwimuzavenomudajelibo.pdf
    • https://cdn.shopify.com/s/files/1/0439/5496/2590/files/cathode_ray_tube_experiment.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/vodipo.pdf
    • https://cdn.shopify.com/s/files/1/0434/4889/3606/files/92073697097.pdf
    • https://cdn.shopify.com/s/files/1/0427/4195/6775/files/ketogenic_diet_lyle.pdf
    • https://cdn.shopify.com/s/files/1/0438/0983/3117/files/64634728546.pdf
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/rixoradopalufaxuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/4618/1787/files/sujimipu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3485/9927/files/33228395272.pdf
    • https://cdn.shopify.com/s/files/1/0438/3267/2418/files/69002868675.pdf
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/96337496978.pdf
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/xebuzoledo.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_off00005b2d.bin
168574e11be9e70e2bbbb66db735e8906250fb469e26509357dff4a56f6cbb3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B2D 5196 bytes
font_01_sfnt_off00006cd9.bin
ff378482dbac438576d2cccf94c681c3e4bacde693aaea7b158b2b390c582594		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD9 10388 bytes
font_02_sfnt_off0000907a.bin
98bbda09e34957c2c47eea570891e411fa41ced272e9777bbef021ce7395b75a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x907A 16148 bytes

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