Malicious PDF — malware analysis report

Static analysis result for SHA-256 215b23b17037fac4…

MALICIOUS

PDF

46.3 KB Created: 2020-08-08 05:17:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a118c48931ce3e77d346d4c76100cdf9 SHA-1: 1f2ca7c30692d61b231d6f842408229cb76dafd9 SHA-256: 215b23b17037fac4e1da19f9e79ab2fc3d1d3e5c9384693bdddad1a20954e19e
160 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=thesis+abstract+format+pdf'. It also exhibits characteristics of an advance-fee scam lure, suggesting a deceptive purpose. The document body, though heavily corrupted, contains fragments of the lure text and the malicious URL. The presence of a link farm further indicates malicious intent, likely to distribute further payloads or engage in SEO poisoning.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.cc/pify?keyword=thesis+abstract+format+pdf
    • http://files.couplematters.org/uploads/1/3/1/4/131452942/d3288e.pdf
    • http://files.abtc2018.com/uploads/1/3/2/7/132712206/jonanomeliwoxivepoji.pdf
    • http://files.eventsforafrica.com/uploads/1/3/0/8/130814195/2273336.pdf
    • https://cdn.shopify.com/s/files/1/0430/4194/7801/files/roxexumevenirob.pdf
    • https://cdn.shopify.com/s/files/1/0435/7039/7352/files/ravaludirivun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49090326843.pdf
    • https://cdn.shopify.com/s/files/1/0436/5582/3525/files/runegozotubifokalugif.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5800/files/99893037207.pdf
    • https://cdn.shopify.com/s/files/1/0429/7352/8213/files/litabujejamopakaso.pdf
    • https://cdn.shopify.com/s/files/1/0431/0161/8327/files/midavemidexexo.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/81904952645.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/biludetejuvujatolometa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/mulogugotupezujomu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0845/7885/files/application_for_schengen_visa_italy.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_off000068e7.bin
085e05a2ff60524de671f8798f4093c8ec1564d39f2607a9a91a71ee970d2353
pdf-font-stream PDF embedded font (sfnt) at offset 0x68E7 5132 bytes
font_01_sfnt_off00007a50.bin
d643a1400cb09d4d57d51edd3c491e69ebf54130ee1b4b32fd0cb62635ebab89
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A50 10560 bytes
font_02_sfnt_off00009e62.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E62 4324 bytes