Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc7f0013bda7bc5f…

MALICIOUS

PDF

43.7 KB Created: 2020-08-07 17:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeebd641ee927bfd31ff10fb484a683b SHA-1: 407673a4f5a4aa55a807781856fa852b1acbf9cd SHA-256: dc7f0013bda7bc5facf10ad2a62ac2a2443ff810ec7ba62cb77ba187e688f368
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are likely part of a scheme to lure users to malicious sites. The primary malicious URL identified is https://ttraff.cc/pify?keyword=sociology+of+law+visions+of+a+scholarly+tradition+pdf.

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=sociology+of+law+visions+of+a+scholarly+tradition+pdf
    • http://files.positivesportcoaching.org/uploads/1/3/0/9/130969080/nenibupenojivejolule.pdf
    • http://files.theacceptedlife.com/uploads/1/3/0/7/130775387/8635892.pdf
    • http://files.bubbleytrinkets.com/uploads/1/3/1/8/131872238/momanudejones.pdf
    • http://togawugu.ahavattorahla.org/uploads/1/3/2/7/132712207/zunisawipadijazor.pdf
    • https://cdn.shopify.com/s/files/1/0439/8183/2350/files/60935009414.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/lijigi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/2267580844.pdf
    • https://cdn.shopify.com/s/files/1/0428/7361/8599/files/lekunebe.pdf
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/appendix_in_latex.pdf
    • https://cdn.shopify.com/s/files/1/0439/8769/7822/files/wolidozezebe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/wupikamijawi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/mathematical_statistics_with_applications_7th_solution.pdf
    • https://cdn.shopify.com/s/files/1/0437/2915/8295/files/roadies_x4_full_episode.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93880590480.pdf
    • https://cdn.shopify.com/s/files/1/0451/9873/7559/files/problem_solving_strategies_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/4188/0224/files/lomulopudevipefosuxagem.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_off00005d34.bin
acdaefb30873f3a7ba1aa56ae87cee38e98988f61eb2118f73562c01d6c0484b
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D34 5444 bytes
font_01_sfnt_off00006fb2.bin
d5b04e15c2b02d2fdd66df93d4af310a75c0a4e4f4da0176b851e481ca8cd456
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FB2 10448 bytes
font_02_sfnt_off00009335.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x9335 4324 bytes