Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c149765c439179…

MALICIOUS

PDF

35.1 KB Created: 2020-08-17 00:00:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02b0535d4c5a9a116d374e11b69bc440 SHA-1: 4e45b41f5eedf9dc7d3bbd6ea4bf512e82b3b21a SHA-256: 47c149765c4391799a4f2b926d0564519345364291c783370e895836f79dc238
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body and embedded links suggest a lure related to educational materials, specifically 'conceptual physics practice page chapter 4 answers'. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to improve search engine ranking for malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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.cc/pify?keyword=conceptual+physics+practice+page+chapter+4+answers
    • http://figosiwog.savannahsturm.com/uploads/1/3/1/4/131406650/7196548.pdf
    • http://files.weyemilab.com/uploads/1/3/2/7/132740997/jokupukib_bapuwako_gekemakirexo.pdf
    • http://files.building313.com/uploads/1/3/0/7/130776350/bulemilonujuk.pdf
    • http://files.wincantonchiropractic.com/uploads/1/3/1/0/131070912/vavulinokamir.pdf
    • https://cdn.shopify.com/s/files/1/0431/5407/9904/files/gugomimifafagavefaguz.pdf
    • https://cdn.shopify.com/s/files/1/0428/7214/4038/files/class_11_maths_ncert_binomial_theorem.pdf
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/34645331038.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/dedepumobidenozikok.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/tizowapox.pdf
    • https://cdn.shopify.com/s/files/1/0431/1279/2221/files/standard_definition_tv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/5561128363.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/33214307516.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_off000049be.bin
ec0e48ae9263b1af20ce00d16a6f1227d9c8f85d528708228e493f1109965a51		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49BE 5384 bytes
font_01_sfnt_off00005c1e.bin
f90e02c40f76d8fc91c95ceb3edaf02717be990a2f9b6e14ab1cf371d1c5e951		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1E 10408 bytes

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