Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b7771c34a5813f6…

MALICIOUS

PDF

56.7 KB Created: 2020-08-24 14:10:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae7e721f8aabe6d2149b1ca97c3bacfb SHA-1: 595b0fc0c2109746defd3a2f0c7c275470c6cb19 SHA-256: 1b7771c34a5813f6739b24e7fa55c4d2d2367439f01c213322179da626e92d10
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to 'ttraff.com', identified as a malicious redirector, which is disguised as a Honda owners manual. This suggests a phishing or malware delivery attempt. The PDF also hosts a large number of external links, many pointing to Shopify-hosted PDFs, indicating a potential link farm for SEO manipulation or traffic redirection. The ML classifier strongly flagged this PDF as malicious.

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=owners+manual+honda
    • http://nikixo.josephmoras.com/uploads/1/3/0/8/130814328/4863962.pdf
    • http://files.highbanks.com/uploads/1/3/0/8/130814078/faruzamuxug.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3494/files/brb_cable_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/butulabidude.pdf
    • https://cdn.shopify.com/s/files/1/0435/5715/9063/files/45592819363.pdf
    • https://cdn.shopify.com/s/files/1/0452/2478/8128/files/convert_to_word_file_besar.pdf
    • https://cdn.shopify.com/s/files/1/0432/7496/1059/files/dorosu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5751/9523/files/22068704463.pdf
    • https://cdn.shopify.com/s/files/1/0432/8374/2884/files/31309578157.pdf
    • https://cdn.shopify.com/s/files/1/0448/9238/9531/files/tuteraxoralififumo.pdf
    • https://cdn.shopify.com/s/files/1/0444/1584/4519/files/generalidades_de_los_aines.pdf
    • https://cdn.shopify.com/s/files/1/0432/0467/3699/files/donapabewojamira.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_off00009fce.bin
5207b2361a596bda1ccb55df3724398d5cba65540094456c4674445a1562999a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FCE 5184 bytes
font_01_sfnt_off0000b144.bin
1dfbb895afde1919e86a609a99e6e1f15d3f99064852b3e9f3e3cc865548eff3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB144 10772 bytes

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