Malicious PDF — malware analysis report

Static analysis result for SHA-256 805b61ecfc24c184…

MALICIOUS

PDF

44.5 KB Created: 2020-08-05 11:25:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7534ed3a3b8368220af7d0a78a5bd9b SHA-1: 872a4be41de931309b6c230370e043407e26bdd7 SHA-256: 805b61ecfc24c184067eddfa53ca09e4f1b8ebac34d42b53df4745df1b900c60
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and mentions 'Acquisitions Incorporated Sourcebook PDF', suggesting a lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=acquisitions+incorporated+sourcebook+pdf
    • http://files.sollvios.com/uploads/1/3/1/8/131857791/2999683.pdf
    • http://files.cosebellecollection.com/uploads/1/3/2/6/132695830/14b1afa382672.pdf
    • http://files.pumpingthecure.ca/uploads/1/3/1/8/131857914/d60231a121943c.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4498/files/37990906578.pdf
    • https://cdn.shopify.com/s/files/1/0434/7569/7830/files/eu_gmp_annex_1_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baludugosutagaxoreforodul.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/mujafivejerifa.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/suvanu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/15358994307.pdf
    • https://cdn.shopify.com/s/files/1/0434/8339/8310/files/lafimivoleleziramisi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7530/4612/files/tekupage.pdf
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/44399402372.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3556/files/fixorabunoziraxazuriz.pdf
    • https://cdn.shopify.com/s/files/1/0439/3736/6184/files/73403268150.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/nofojamuwuxogatonuju.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_off00006eb1.bin
e5b8646c5f58a389d59261cc8850091df1f9f719e9250ad39184f54702d246af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB1 5436 bytes
font_01_sfnt_off0000813b.bin
193f98abe898c5e7f4143672af3eb104c3b9867cd1decdcc54a9622b85e5adf4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x813B 10544 bytes

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