Malicious PDF — malware analysis report

Static analysis result for SHA-256 db6381d562935852…

MALICIOUS

PDF

47.7 KB Created: 2020-08-11 01:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 830aaae5d9ba4c6ce415262a1b38a083 SHA-1: c016970e0b489c4f36db938d7fc975ac820e9655 SHA-256: db6381d562935852c2f94f4407eb82ccb1fa2c8895f72228b388317cda336615
120 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large number of external links, indicating a link farm or spam distribution tactic. The primary malicious URL identified is https://ttraff.ru/pify?keyword=articles+grammar+examples+pdf, which likely serves as a redirector to further malicious content. The document body itself is heavily obfuscated and contains numerous URLs, reinforcing the link farm heuristic.

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=articles+grammar+examples+pdf
    • http://wuvopuke.papercranesoaps.com/uploads/1/3/2/6/132680903/zepovizuwerat.pdf
    • http://files.auntiemaileshawaiiangourmetfavorites.com/uploads/1/3/0/8/130873708/xevibabizunofim_rifuvubafep_kuxelamibabam.pdf
    • http://files.acherrymoon.com/uploads/1/3/1/6/131636834/budaninulimete.pdf
    • http://files.coldcomfortswhistler.com/uploads/1/3/2/6/132682113/texemekon.pdf
    • http://files.aliciamerrett.co.uk/uploads/1/3/1/4/131437037/limaxedomebex_meleviduniv_mofopebab_xowuxisuketub.pdf
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/65242129297.pdf
    • https://cdn.shopify.com/s/files/1/0434/5092/5223/files/asean_free_trade_area_afta.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7405/files/funabomi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1081/files/soginenumimajixuvi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5625/7441/files/mavejilojewog.pdf
    • https://cdn.shopify.com/s/files/1/0434/0465/6790/files/36771342610.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/oath_of_crown_5e.pdf
    • https://cdn.shopify.com/s/files/1/0436/9671/7992/files/2000_honda_odyssey_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9970/files/35068336698.pdf
    • https://cdn.shopify.com/s/files/1/0430/9418/0001/files/bejupinubolik.pdf
    • https://cdn.shopify.com/s/files/1/0437/5393/0901/files/17801005902.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9590/files/bataan_nuclear_power_plant.pdf
    • https://cdn.shopify.com/s/files/1/0432/2479/3245/files/kontinuierliches_anforderungsmanagement.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_off00007b03.bin
ddcdee6df08b209bedc698760bde8153059a080c75861317c4f7d5c8ec8711bd
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B03 5532 bytes
font_01_sfnt_off00008dbe.bin
82d44ec4e87c2687eb4613cad7aeaeaf351a84a7454a42487ec0887b8dde22b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DBE 10464 bytes