Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f901411af48d29f…

MALICIOUS

PDF

46.1 KB Created: 2020-08-07 20:07:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9c00d4954333026f47b753e3c0d3b7a SHA-1: 498895339ccf452c742b86db81ad4013be9cb775 SHA-256: 8f901411af48d29fb2ff352b0aeb39917cac3cbd87680e27c2104dfa57b94257
150 Risk Score

Malware Insights

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

The PDF contains numerous links, with one specifically identified as a malicious redirector to 'ttraff.com'. This indicates a phishing or credential harvesting attempt, likely using the document body's text as a lure. The ML classifier strongly supports the malicious verdict. No scripts were extracted, limiting the analysis of further payload delivery.

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=fisiopatologia+de+la+cetosis+bovina+pdf
    • http://files.sandandstarsdesign.com/uploads/1/3/1/3/131384359/3116ec40.pdf
    • http://files.swaggerstateathletics.com/uploads/1/3/1/1/131163932/6908033.pdf
    • http://files.alchemyofhippieness.com/uploads/1/3/0/8/130874359/8304844.pdf
    • https://cdn.shopify.com/s/files/1/0433/0926/9156/files/83110428782.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38935964995.pdf
    • https://cdn.shopify.com/s/files/1/0429/7916/4314/files/25593188267.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/dabimaxupuvawusamikajovir.pdf
    • https://cdn.shopify.com/s/files/1/0435/9657/8979/files/brunner_and_suddarth_s_textbook_of_medical_surgical_nursing_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/47607118808.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9973/files/43199633047.pdf
    • https://cdn.shopify.com/s/files/1/0433/7719/7221/files/tumuzug.pdf
    • https://cdn.shopify.com/s/files/1/0434/5508/6742/files/6902107388.pdf
    • https://cdn.shopify.com/s/files/1/0429/5353/9747/files/amphitryon_moliere.pdf
    • https://cdn.shopify.com/s/files/1/0429/7628/0729/files/sijedesanimeletonir.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/17806173352.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/gonoboxowom.pdf
    • https://cdn.shopify.com/s/files/1/0429/5072/1699/files/29221074022.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_off00006561.bin
bca554ae336ae78f4ffe1a02241423f8ca79f702880eef7f7b8ab56022c17f90
pdf-font-stream PDF embedded font (sfnt) at offset 0x6561 5172 bytes
font_01_sfnt_off00007714.bin
3d480135c2d33129ee50525cdde993b75f16b1b3c9a4a6e991a0735822194243
pdf-font-stream PDF embedded font (sfnt) at offset 0x7714 11252 bytes
font_02_sfnt_off00009b7b.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B7B 4324 bytes