Malicious PDF — malware analysis report

Static analysis result for SHA-256 df64b35114a181ec…

MALICIOUS

PDF

46.5 KB Created: 2020-08-19 03:42:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ce1e256b47825c6422cad713708bf0e SHA-1: c9ffecafdfac55eb28afc225ca4ddafafdd5d3b6 SHA-256: df64b35114a181ec030c83c473b813243b29374533a4aced280e093fea3fc76e
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 external resources. One critical heuristic identified a link to known malicious redirector infrastructure (ttraff.ru), suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains the URL that triggered the malicious redirector heuristic, indicating an attempt to lure users to that site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to obscure the malicious destination.

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=dotted+line+reporting+pros+and+cons
    • http://files.thesaltbarmacclesfield.com/uploads/1/3/1/3/131383754/vezusexegaze-kokivu-kuvulawo.pdf
    • http://files.kentuckymathcounts.org/uploads/1/3/0/8/130874633/givafepepubek_jikefanusufo_jomoref.pdf
    • http://files.rethinkingeconomics.nl/uploads/1/3/1/1/131164424/23404c8ddad7.pdf
    • https://cdn.shopify.com/s/files/1/0431/4713/3088/files/ielts_general_writing_task_1_tips.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/82452997311.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89120948070.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9395/files/karinagamumipunosalika.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/isaac_asimov_cult_of_ignorance.pdf
    • https://cdn.shopify.com/s/files/1/0450/6550/2872/files/prom_deadlift_program.pdf
    • https://cdn.shopify.com/s/files/1/0429/5668/5468/files/bcs_exam_all_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/6567/8755/files/lizutitekexoxiz.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/kemalamuxivexibijuxagixeb.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2508/files/sopurateworoxisutu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5266/files/75505459864.pdf
    • https://cdn.shopify.com/s/files/1/0437/6395/7909/files/wiralekegeda.pdf
    • https://cdn.shopify.com/s/files/1/0441/4128/1432/files/jevol.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6496/files/51086938482.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_off00007731.bin
2ec5daf3a931b6dd99b9c964507a9fec9b5fc924dbfb771904bcdbf292000b15
pdf-font-stream PDF embedded font (sfnt) at offset 0x7731 5240 bytes
font_01_sfnt_off0000890c.bin
470bf0f67828816e4a93277fd74fa78c1a36d4d4dbe32e800f8773b654667ea2
pdf-font-stream PDF embedded font (sfnt) at offset 0x890C 10508 bytes