Malicious PDF — malware analysis report

Static analysis result for SHA-256 911022610b2ea9a5…

MALICIOUS

PDF

34.8 KB Created: 2020-08-08 00:56:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5803e0c3d3fff532e24eb82d861a1f4 SHA-1: 9501bb5c6b6acebc578acf037e46e4992d925462 SHA-256: 911022610b2ea9a58b19530161408ac0fda92940c7f922e0c8c453fac3f24e66
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL is https://ttraff.com/pify?keyword=e+t+magazine+pdf, which likely serves as a lure to download further malicious content. The document body itself is heavily obfuscated, but the presence of the malicious redirector and the link farm strongly indicate a phishing or malware distribution attempt.

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=e+t+magazine+pdf
    • http://xoboraze.prairiekennel.com/uploads/1/3/1/3/131398140/rotalibudon.pdf
    • http://files.laniakeamedia.com/uploads/1/3/1/3/131380504/genakip.pdf
    • http://files.bridgesidebooks.com/uploads/1/3/2/3/132302978/6477255.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/tumenanomedurukeletukag.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.pdf
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/xapunozazogirezi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/20154230131.pdf
    • https://cdn.shopify.com/s/files/1/0438/5092/4182/files/5238771060.pdf
    • https://cdn.shopify.com/s/files/1/0434/1468/3813/files/tecnologia_en_agricultura.pdf
    • https://cdn.shopify.com/s/files/1/0452/7934/6850/files/bank_exams_today_english.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/foforavivagemidamuzix.pdf
    • https://cdn.shopify.com/s/files/1/0433/9718/5701/files/45395409578.pdf
    • https://cdn.shopify.com/s/files/1/0429/0831/9907/files/178981732.pdf
    • https://cdn.shopify.com/s/files/1/0435/1174/2628/files/61039656602.pdf
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/dulidawa.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_off000049e2.bin
d23f51a869d99293f1b99dbf873698e6de3bfc1816beeb8e1576cf6275e7663e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49E2 5060 bytes
font_01_sfnt_off00005b1d.bin
dccbc66065b4cd42f3d001572bb04c87ffba5d94d9fd4bbb30ac7f2ba6daaa9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1D 10416 bytes

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