Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5d1c13ccda0fd4d…

MALICIOUS

PDF

67.5 KB Created: 2020-08-22 04:55:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b25f294555874ca3c9f44094401aada8 SHA-1: 942809c5e75d8d16119961f30922a25dab96265f SHA-256: f5d1c13ccda0fd4da156611b9f7300dcb2056a4f912df1ee8cebbc2b58fe8df1
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious infrastructure at 'ttraff.com'. The document body, though partially obfuscated, includes the text 'Gerd guidelines 2016' and the malicious URL, suggesting a social engineering lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination and potentially improve search engine ranking for malicious content.

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=gerd+guidelines+2016
    • http://pipiwi.jpressley.com/uploads/1/3/1/3/131383839/cbc403c7ab27165.pdf
    • http://gesof.jencullertonjohnson.com/uploads/1/3/2/6/132682347/96f6f1ae76.pdf
    • https://cdn.shopify.com/s/files/1/0440/5959/0806/files/80629557329.pdf
    • https://cdn.shopify.com/s/files/1/0434/7206/0573/files/kipagevasediwaxu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4736/1439/files/weight_loss_meal_plan_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/2897/0647/files/acretismo_placentario_por_ultrasonido.pdf
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/minadot.pdf
    • https://cdn.shopify.com/s/files/1/0432/4235/6904/files/54109621949.pdf
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/classical_sociological_theory_second_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/6526/9669/files/wijilefituzonabijiviluz.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/goberomekovexi.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_off0000cb09.bin
61598f5d7b0408c6c6a35bf795340ccda043e9d980a0cd9a7fba67343ac8b39d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB09 5292 bytes
font_01_sfnt_off0000dd2a.bin
f0fa07bd45028279784a0a7bb1290de71cc976898d9e928d30fff766144bdb92		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2A 10648 bytes

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