Malicious PDF — malware analysis report

Static analysis result for SHA-256 eddfdd8d47f8acb9…

MALICIOUS

PDF

37.8 KB Created: 2020-07-31 23:18:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48b31b3eb63a88338c26f6435eb2d0ec SHA-1: ec3305602f1fc45570cc4f298bf6dcc2c3f868e4 SHA-256: eddfdd8d47f8acb98cfc1645333d9f5fdd66a54b5936012c4ced3947170d6908
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, disguised as a "Michigan chauffeur license test". The redirector URL is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains the same redirector URL and several other URLs hosted on Shopify and other domains, likely part of a link farm to improve search engine ranking for malicious content. No scripts were extracted, limiting the analysis of further payload delivery mechanisms.

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=michigan+chauffeur+license+test
    • http://files.windhamjunction.com/uploads/1/3/1/4/131483371/d7be9014e04444.pdf
    • http://files.thursdayisthenewfriday.org/uploads/1/3/1/0/131070590/2dc6b4841338f.pdf
    • http://files.besa-dmv.com/uploads/1/3/2/6/132695280/banisuw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/liwisubusamepumiv.pdf
    • https://cdn.shopify.com/s/files/1/0440/5483/9461/files/norudoba.pdf
    • https://cdn.shopify.com/s/files/1/0438/2910/0704/files/xudaxibuvevufiponokafun.pdf
    • https://cdn.shopify.com/s/files/1/0428/2518/7491/files/86514640368.pdf
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/89230599780.pdf
    • https://cdn.shopify.com/s/files/1/0434/4171/7415/files/semopitupenikitefa.pdf
    • https://cdn.shopify.com/s/files/1/0435/1875/4971/files/kimivanovezujukekuna.pdf
    • https://cdn.shopify.com/s/files/1/0439/8769/7822/files/wilabirigowode.pdf
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/82583380369.pdf
    • https://cdn.shopify.com/s/files/1/0437/2666/7925/files/11036893398.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0067/files/magisibenusupuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/9939/8052/files/katipavubo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/10818486256.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_off00005596.bin
73e2b010c6352fb698396e0b0652b3a5db31a2dc2ebc1d609b0535b51b02acbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5596 5148 bytes
font_01_sfnt_off00006729.bin
23587a5a98356873fd6e3e95e7839f2d1ed4350d92777872de5cbfdaae0ce84b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6729 10304 bytes

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