Malicious PDF — malware analysis report

Static analysis result for SHA-256 97222648ac9646b4…

MALICIOUS

PDF

44.3 KB Created: 2020-08-14 21:17:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1277fdd8b0d4508ebaa6d66106d3dab SHA-1: 8b435483bee291b2bb097dea8c1fc2aff2dd9fd5 SHA-256: 97222648ac9646b44c0d59054fd1eb57061d5f40c6f9c7964d70bc8aed63919a
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic identifying it as a redirector link to known malicious infrastructure. It also contains a large number of external PDF links, many hosted on Shopify, forming a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=police+car+game++pc, which likely serves as a gateway to further malicious content.

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.cc/pify?keyword=police+car+game++pc
    • http://files.thekinkhub.com/uploads/1/3/1/4/131455621/3209413.pdf
    • http://degojegen.lanai-accessories.com/uploads/1/3/1/6/131637254/vagelit.pdf
    • http://files.catherinebeerdabasso.com/uploads/1/3/1/4/131437615/zavudomutamoto_mopimenuza.pdf
    • http://rapeza.bnhlivestock.ca/uploads/1/3/0/7/130740221/wokixuvobevovexes.pdf
    • https://cdn.shopify.com/s/files/1/0436/5913/3081/files/91650897666.pdf
    • https://cdn.shopify.com/s/files/1/0434/5013/8784/files/adenitis_mesenterica_en_adultos.pdf
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/moselojufofipolagepeva.pdf
    • https://cdn.shopify.com/s/files/1/0436/9137/6794/files/lorusogibisifegizeg.pdf
    • https://cdn.shopify.com/s/files/1/0432/6345/9486/files/79920407300.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8453/files/83728968807.pdf
    • https://cdn.shopify.com/s/files/1/0429/9217/3217/files/wotokuzegetasosixu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4120/1064/files/80040142272.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/m._yahoo._com_tsrc_samsungbm.pdf
    • https://cdn.shopify.com/s/files/1/0440/7679/4008/files/adobe_reader_download_ubuntu.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_off0000700d.bin
0ee0e86e3d4f01b59d90d80f88463e32c7eb5fefedf8cdf307c054370f969c8f
pdf-font-stream PDF embedded font (sfnt) at offset 0x700D 5076 bytes
font_01_sfnt_off00008135.bin
533b26de1da1c8bb2ce062ce5e6ffce4ea34b043be1ed3e9cbc0bcaf7670ea4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8135 10420 bytes