Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eeee0aebf259d43…

MALICIOUS

PDF

46.7 KB Created: 2020-08-08 21:02:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2d9c0257ecbee6260f848cdca9519272 SHA-1: 3d3b9a9924b940d2d846d59cd41e77a75eff3b95 SHA-256: 2eeee0aebf259d43541b69841a1e8e88fdccb3f6401f4d62923ff010ac131ae7
152 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to benign Shopify domains, but one critical link redirects to the known malicious domain ttraff.com. This indicates a phishing or redirection attempt. The ML classifier strongly flagged this PDF as malicious, supporting the presence of malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent appears to be the redirection to a harmful URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=arterial+puncture+for+blood+gas+analysis+pdf
    • http://files.teapup.com/uploads/1/3/1/6/131636678/femusomiwowasa-gubovomelovu-wusuwizefut.pdf
    • http://files.bookerplays.co.uk/uploads/1/3/1/4/131454207/tibusekozu_gowas.pdf
    • http://daxuwaz.wowfactorcards.com/uploads/1/3/1/4/131482952/63bbff43717f60.pdf
    • http://files.mccdetroit.org/uploads/1/3/0/7/130738779/1826345.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6641/files/us_street_address_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/7175/0823/files/tefiwidobulikifugatoji.pdf
    • https://cdn.shopify.com/s/files/1/0431/3012/6490/files/fedizomimetovu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/zofixuve.pdf
    • https://cdn.shopify.com/s/files/1/0438/4430/5046/files/vujawuxurukidu.pdf
    • https://cdn.shopify.com/s/files/1/0439/1682/0635/files/raboses.pdf
    • https://cdn.shopify.com/s/files/1/0430/6593/3973/files/agilent_1260_infinity_hplc.pdf
    • https://cdn.shopify.com/s/files/1/0430/0881/9349/files/14216486422.pdf
    • https://cdn.shopify.com/s/files/1/0440/2036/7510/files/45251726933.pdf
    • https://cdn.shopify.com/s/files/1/0430/5970/8058/files/67247856129.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/19033688735.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.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_off00006ab2.bin
c3627957e1d5b9fb309c9864572a0ef425189e25fa649019a66554f5c9317887		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB2 5436 bytes
font_01_sfnt_off00007d34.bin
504501c522e9c2d411d11af7152ca9bf5369f3253f7fa5b33d467a408a93c66a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D34 10056 bytes
font_02_sfnt_off00009f96.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F96 4324 bytes

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