Malicious PDF — malware analysis report

Static analysis result for SHA-256 e91fda24d7f45e3d…

MALICIOUS

PDF

52.2 KB Created: 2020-07-16 05:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 772d90167ad92daab3fa4ebe3c4f13e0 SHA-1: b32dabd75a36188acb21a4f639ce2bcc40fb2e93 SHA-256: e91fda24d7f45e3d540e55445e6dc8c64f374df22ab787ddc985c5c7292d52f5
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains text that appears to be a lure for Oromo language speakers seeking a PDF. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to increase visibility and traffic to malicious sites.

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.com/wb?keyword=kitaaba%20seenaa%20afaan%20oromoo%20pdf
    • http://files.learningslowly.co/uploads/1/3/2/6/132682119/4655254.pdf
    • http://files.bodiicore.com/uploads/1/3/0/7/130740363/09ce21731e2027c.pdf
    • http://files.lauriebenningroberts.com/uploads/1/3/1/4/131438002/a2d488.pdf
    • http://files.keepmaryoutofthekitchen.com/uploads/1/3/0/9/130969298/621ef3a12.pdf
    • http://files.bodiicore.com/uploads/1/3/
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/65605057235.pdf
    • https://cdn.shopify.com/s/files/1/0434/7356/7901/files/zotodusimofebewatimilivu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kiwovanigefuminif.pdf
    • https://bafupidaruf.files.wordpress.com/2020/07/sejawovolebutowufuxi.pdf
    • https://fewakiw.files.wordpress.com/2020/06/47939193690.pdf
    • https://jodopeku.files.wordpress.com/2020/07/80055469440.pdf
    • https://diworolev.files.wordpress.com/2020/07/bisovoto.pdf
    • https://bizusiwe.files.wordpress.com/2020/07/repetabuzexopib.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bisadugizutojaririxenudep.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/20908823581.pdf
    • https://cdn.shopify.com/s/files/1/0430/8677/4436/files/38943969275.pdf
    • https://cdn.shopify.com/s/files/1/0437/5887/8872/files/jovaxusen.pdf
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/99674557518.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lekerumukin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jezimix.pdf
    • https://cdn.shopify.com/s/files/1/0434/4292/9821/files/vetadezorubukiramigiribi.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_off00006e72.bin
cabe12777aea9fe4206acb768e0c3e2d457d942d389ce4077bfd424c6f92cad0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E72 5052 bytes
font_01_sfnt_off00007f76.bin
746c3437c7d10af52465ab4f6548eb9e5551602b697233ebe4e872de6388fd92
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F76 14164 bytes
font_02_sfnt_off0000ab55.bin
71012109155a9b3f3db5e6834c7b8801c285084f12c4c29c13c651ef04528056
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB55 16316 bytes