Malicious PDF — malware analysis report

Static analysis result for SHA-256 d299a613956e2c0d…

MALICIOUS

PDF

47.3 KB Created: 2020-08-19 01:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33e90045546aa2086d7d20231b832a57 SHA-1: 4238b38c2bfd7b8dccde87d60f19e2daeb98eb75 SHA-256: d299a613956e2c0d881e1dec1db080020652463f90855c70f0a959c88d4573d4
128 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 pointing to 'ttraff.com' and a link farm with numerous PDFs hosted on 'cdn.shopify.com'. The presence of a redirector suggests an attempt to obscure the final malicious destination, likely a phishing page or a malware download site. The document body, though heavily obfuscated, contains keywords related to academic answers, potentially serving as a lure.

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=cengage+webassign+math+answers
    • http://files.seoulvibephangan.com/uploads/1/3/1/0/131071166/divadofi.pdf
    • https://cdn.shopify.com/s/files/1/0452/7502/1474/files/best_auto_repair_manuals_reviews.pdf
    • https://cdn.shopify.com/s/files/1/0435/9903/6573/files/21042933877.pdf
    • https://cdn.shopify.com/s/files/1/0430/8307/1650/files/51520212300.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/abortus_spontan.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/jivafopomiziveraz.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0876/files/visits_to_the_blessed_sacrament_alphonsus_liguori.pdf
    • https://cdn.shopify.com/s/files/1/0437/8745/2576/files/belafig.pdf
    • https://cdn.shopify.com/s/files/1/0433/9286/0327/files/35398831410.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/37929988604.pdf
    • https://cdn.shopify.com/s/files/1/0449/7919/1966/files/89440906994.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0498/files/adenoiditis_en_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.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_off0000785e.bin
c37b6e5b9d890f3f62f388f44889d2c765f0efac03b7892332bf3b39b3f62031		 pdf-font-stream PDF embedded font (sfnt) at offset 0x785E 5204 bytes
font_01_sfnt_off000089f6.bin
e0e5cae7b96e1361ec292b0f026432412d127e8d1692beacb0cd165f78906bc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89F6 11476 bytes

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