Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1294b3109731c12…

MALICIOUS

PDF

43.2 KB Created: 2020-08-19 09:22:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 551c2348677399df301d24b045b3239f SHA-1: 1dd91863ed135f62b7a222870ed4b4dc52fab1d0 SHA-256: b1294b3109731c120b67956c6377539e1498ca4b1321ad5d789e5651c3a1c5e9
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely the primary malicious destination. The document body contains garbled text but includes the target URL, reinforcing the malicious intent. No scripts were extracted from this sample.

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/pify?keyword=blast+furnace+nptel+pdf
    • http://foderawi.memortazavi.com/uploads/1/3/2/8/132814930/roninapiride.pdf
    • http://files.plymouthcantoncivitans.com/uploads/1/3/2/7/132711966/zijonekavixu.pdf
    • http://files.molly-boone-wed.com/uploads/1/3/0/9/130969580/vupediruvik.pdf
    • http://files.anacmcinerney.com/uploads/1/3/0/7/130740514/nasuluzif.pdf
    • http://files.eloisekerr.co.uk/uploads/1/3/1/4/131453267/5d9aaceb9a80df5.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/52835990820.pdf
    • https://cdn.shopify.com/s/files/1/0432/5523/4710/files/12052733481.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/96069988430.pdf
    • https://cdn.shopify.com/s/files/1/0432/4635/4594/files/mujiritorerelotebaveza.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/kotor_2_restored_content_mod.pdf
    • https://cdn.shopify.com/s/files/1/0429/7742/7609/files/wudenibevezederitanologo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8551/9255/files/sample_letter_of_appeal_to_health_insurance_company.pdf
    • https://cdn.shopify.com/s/files/1/0437/3846/4417/files/zibowifitewowewadib.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/lowes_merced_ca.pdf
    • https://cdn.shopify.com/s/files/1/0428/4930/4732/files/sozile.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/73624590403.pdf
    • https://cdn.shopify.com/s/files/1/0435/2894/5819/files/espectro_de_absorcion_atomica.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_off00006693.bin
d47f0dd8f472b8c1a19aea7e839493f63daf56bed6f3ee625fd370709b16d9be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6693 5200 bytes
font_01_sfnt_off00007844.bin
116179105c91e5520931f321411cadc1b90b41e98ec805db7ebee9fe79b139ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7844 12552 bytes

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