Malicious PDF — malware analysis report

Static analysis result for SHA-256 495033ca9dc89109…

MALICIOUS

PDF

50.2 KB Created: 2020-07-14 09:51:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bf38deb23d0fd4469aaf8483ce1a3a6 SHA-1: ebf7b49e6f7b42201aa178887546539e3612bb64 SHA-256: 495033ca9dc891094f8f837fc0377afea390b0cf63c26e59183b610920483c4a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'Apa manual book reference'. The presence of many external PDF links, including one pointing to a Shopify domain, indicates a link farm strategy, likely for SEO poisoning or to obscure the ultimate destination. The primary malicious URL identified is ttraff.com.

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=apa%20manual%20book%20reference
    • http://files.willycosmosguidetohotsprings.com/uploads/1/3/1/6/131606719/simasob_bufonepeb_bowuvekutojiw.pdf
    • http://files.wellsvillefriendsfoundation.org/uploads/1/3/1/4/131453355/3570728.pdf
    • http://files.rt19produceauction.com/uploads/1/3/1/4/131454304/3943432.pdf
    • http://files.sfluxedwellings.com/uploads/1/3/1/1/131163747/db0baf69.pdf
    • http://files.heartwellsdesigns.com/uploads/1/3/1/0/131070112/podobati-butamew-nagafofezor.pdf
    • http://files.sfluxedwellings.c
    • https://cdn.shopify.com/s/files/1/0427/8750/4294/files/45356475682.pdf
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/dudewinolosededovafaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nidosavexurirevinuno.pdf
    • https://nezirirotur.files.wordpress.com/2020/06/zadodijotovasinevexojo.pdf
    • https://majokefimev.files.wordpress.com/2020/06/27015060203.pdf
    • https://xividitusaje.files.wordpress.com/2020/06/bawur.pdf
    • https://pujobat.files.wordpress.com/2020/06/fajexijamugisegipubapoka.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/23582012054.pdf
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/fipebumolulogigolijitoka.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7262/files/xagef.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuvuwagel.pdf
    • https://cdn.shopify.com/s/files/1/0428/1214/5823/files/katepifutesemupoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/31522917519.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5676577217.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/82915586509.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_off00008837.bin
e61b8a995d686ae2eac5c08e9f0a1fdb87fb4825fb95cd98d0e6551d21644352
pdf-font-stream PDF embedded font (sfnt) at offset 0x8837 4932 bytes
font_01_sfnt_off000098d9.bin
a501d8f208648ae5f1d820ff1c9052bccbdacb5d4217366d7b4a0577892f748e
pdf-font-stream PDF embedded font (sfnt) at offset 0x98D9 10120 bytes