Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e0aeb2654e6b8b2…

MALICIOUS

PDF

42.0 KB Created: 2020-08-21 08:33:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e4e4b46a1d3edeb0f69d6fc33e2c89dc SHA-1: bf6256c2203bff230f481a14586a7c1debc4968b SHA-256: 6e0aeb2654e6b8b2a65e5cd1d21b668a0faa021f32c9a7084cdc7d106b7cf74b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, one of which, 'https://ttraff.com/pify?keyword=defensive+driving+test+answers+2018+fiji', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'defensive driving test answers'. The presence of numerous other PDF links, many pointing to Shopify, suggests a link farm or SEO poisoning attempt to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

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.com/pify?keyword=defensive+driving+test+answers+2018+fiji
    • http://files.pbgmys94.com/uploads/1/3/0/9/130969438/xijififewixik.pdf
    • http://bupabe.outtahatha.com/uploads/1/3/2/7/132740280/tufule-rukazipase-bukifanutabaru.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/fubofagagirewar.pdf
    • https://cdn.shopify.com/s/files/1/0428/0687/0183/files/10212475784.pdf
    • https://cdn.shopify.com/s/files/1/0430/0213/4681/files/salbutamol_mechanism_of_action.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88406012193.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/xevosutagi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4542/8120/files/brushed_cotton_sheets_primark.pdf
    • https://cdn.shopify.com/s/files/1/0437/5812/5207/files/zipekox.pdf
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/mage_the_awakening_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3326/3253/files/sipazovoganu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lezoxaxus.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5465/files/nonewigud.pdf
    • https://cdn.shopify.com/s/files/1/0436/4324/0606/files/71642614859.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006257.bin
2c06ea9a4b2a88a5acfeab8073d8b4633a581d79f65b1bae99d41527c16bb9e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6257 5788 bytes
font_01_sfnt_off0000763f.bin
78e2f52ae7e540bf8da8b0f460de8a09d608ec84ce2a1259beda618cd203e56a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x763F 10920 bytes

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