Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7a9a2ca7ecc601b…

MALICIOUS

PDF

46.9 KB Created: 2020-07-31 03:59:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 846bbd25317317cba4175d171ee87bc5 SHA-1: 539c8bf78d5546f299c537bda60e420163071574 SHA-256: d7a9a2ca7ecc601bd43b65ec3aa7ef8b8e1ed75573affe8af0248628a152700f
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a PDF link farm with numerous external links, many hosted on Shopify, suggesting an attempt to distribute or mask malicious content. The document body, though heavily obfuscated, contains metadata indicating it was generated by wkhtmltopdf, a tool often used to create malicious PDFs. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=effective+communication+methods+pdf
    • http://files.predictionservice.com/uploads/1/3/0/8/130873708/lodiwo_lebuxabeloniru_gajobuvuju.pdf
    • http://files.lifesrenderingsart.com/uploads/1/3/2/8/132814906/8402378.pdf
    • http://files.thefreemath.org/uploads/1/3/1/4/131438161/bf27b.pdf
    • http://files.sedonaweddingessentials.com/uploads/1/3/1/4/131452929/jexadelixazetisawuru.pdf
    • http://files.magicfoxproducts.com/uploads/1/3/0/9/130969478/822fd6bc12a8.pdf
    • http://files.thefreemath
    • https://cdn.shopify.com/s/files/1/0429/0733/6863/files/4057470006.pdf
    • https://cdn.shopify.com/s/files/1/0429/9931/6639/files/86200825543.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/bifeguzijamatuvexemajob.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/gilobigazitifemadekavemeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nubizasijimowedemo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0604/2013/files/35252652248.pdf
    • https://cdn.shopify.com/s/files/1/0440/5932/8662/files/84840188804.pdf
    • https://cdn.shopify.com/s/files/1/0429/2247/5687/files/pegosobosuvibi.pdf
    • https://cdn.shopify.com/s/files/1/0435/9307/2808/files/41845644428.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4745/files/jetamuvosujurosadadelo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3689/3599/files/20417671377.pdf
    • https://cdn.shopify.com/s/files/1/0438/2212/1122/files/parinaniwotazelexefuper.pdf
    • https://cdn.shopify.com/s/files/1/0439/5096/4904/files/putofikuvikema.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_off00007b62.bin
afcdde10647cb5835a08182d1b650b3669fead271ec4591104d03b21a41f4d1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B62 5168 bytes
font_01_sfnt_off00008cd1.bin
9e395690e0408d93cdf828668279f1a368632418083a8c2730a4283256d20d41
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD1 9660 bytes