Malicious PDF — malware analysis report

Static analysis result for SHA-256 57d23702965f44fa…

MALICIOUS

PDF

45.3 KB Created: 2020-08-08 03:54:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8811c02caf45c918e617a2a0c4ea9b57 SHA-1: 27484459172661db2912d3f453547a28490bd035 SHA-256: 57d23702965f44fa146915af73504f292f2992f74f500a9aadf4bb23e0b20246
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same URL found in the redirector heuristic. The presence of a low-severity heuristic for an urgency lure further supports the phishing pretext. 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=accredited+universities+in+kenya+pdf
    • http://safuwu.lyrictheatreillinois.com/uploads/1/3/1/4/131407668/7c44dc4c5.pdf
    • http://files.wvssearland.com/uploads/1/3/0/7/130740596/7bc763.pdf
    • http://files.sunflowerhouse.waggamatters.com/uploads/1/3/0/7/130775677/loxapavaseki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88065476392.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/bupofakagifo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4470/9276/files/36634117401.pdf
    • https://cdn.shopify.com/s/files/1/0438/3227/9200/files/10861132762.pdf
    • https://cdn.shopify.com/s/files/1/0434/0698/3335/files/kowinoderinebewevega.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96989945255.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/fepajewavefugiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/6912/0413/files/trailer_registration_holder.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2465/files/55188061601.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/oliver_velez.pdf
    • https://cdn.shopify.com/s/files/1/0431/1239/9009/files/84090888815.pdf
    • https://cdn.shopify.com/s/files/1/0433/0523/8688/files/a._p._societies_registration_act_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/3547/6636/files/25077855455.pdf
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/10856068189.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_off000070c1.bin
48514f42a2b76e21cc14a73bfa77acb7506536f6b880d89c4b170e62ed532586
pdf-font-stream PDF embedded font (sfnt) at offset 0x70C1 5332 bytes
font_01_sfnt_off00008309.bin
bfb3bfb56a6457be2178dfce20e03dbe157b5ae055aea41614e33ce98c9bcb11
pdf-font-stream PDF embedded font (sfnt) at offset 0x8309 10532 bytes