Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2de59e5c8f354b8…

MALICIOUS

PDF

44.4 KB Created: 2020-08-23 10:14:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a63bf03f59ecab31dfd0fc73e90f9aef SHA-1: af9a0f75dfd3ae5b084624f0dbeb879e3c378158 SHA-256: f2de59e5c8f354b8cf138a1b5faaf7ef115f1dba97b322c81d64499d697e2162
150 Risk Score

Malware Insights

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

The PDF contains numerous links, including a critical malicious redirector link to 'ttraff.cc'. The document body, though heavily obfuscated, appears to be a lure related to a 'basketball weight training program pdf'. The presence of a link farm and the ML classifier firing strongly indicate malicious intent, likely to redirect users to a malicious site for further exploitation or phishing.

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=offseason+basketball+weight+training+program+pdf
    • http://tavap.safarimurano.com/uploads/1/3/2/6/132695569/0cd09c0344bd5.pdf
    • http://sazedo.help-me-learn.com/uploads/1/3/1/8/131858661/f48e90.pdf
    • http://files.julianakimfinearts.com/uploads/1/3/0/7/130775242/nigaxiko.pdf
    • https://cdn.shopify.com/s/files/1/0429/9682/6273/files/71268729738.pdf
    • https://cdn.shopify.com/s/files/1/0432/4936/9252/files/subject_verb_agreement_worksheets_grade_7.pdf
    • https://cdn.shopify.com/s/files/1/0432/8158/0188/files/ropusajen.pdf
    • https://cdn.shopify.com/s/files/1/0447/9988/5463/files/36485850520.pdf
    • https://cdn.shopify.com/s/files/1/0435/2642/2687/files/fupezebat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5451/files/rexubevozu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/cerebral_vascular_malformation_icd_10.pdf
    • https://cdn.shopify.com/s/files/1/0436/8223/4521/files/wow_classic_fury_warrior_bis.pdf
    • https://cdn.shopify.com/s/files/1/0436/9252/3675/files/how_to_force_git_pull.pdf
    • https://cdn.shopify.com/s/files/1/0428/9550/7622/files/drunken_master_imdb_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/bodiwujudenirebakegusel.pdf
    • https://cdn.shopify.com/s/files/1/0447/2664/8985/files/two_stroke_si_engine.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_off00006d39.bin
e0b09b921ff767eee91bcd5511a515ee97c5ce2d9a9e7f002f4996c2de3adfed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D39 5776 bytes
font_01_sfnt_off000080c6.bin
df3ee0a64ca44d9009017d46517248b4e9a99266a6f2433cddae29caf2c767a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80C6 10352 bytes

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