Malicious PDF — malware analysis report

Static analysis result for SHA-256 730333e06e3db5cb…

MALICIOUS

PDF

57.3 KB Created: 2020-08-08 07:00:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea51be15471915a1de55d4d5759f7683 SHA-1: 5db06b1210684178752fa34adb03d6c0a5224d57 SHA-256: 730333e06e3db5cbac25694616cf265355add6f52cebb270c738087f208b7cd5
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a link to a known malicious redirector, ttraff.cc, which is part of a link farm designed to distribute malicious content. The document body itself contains the lure text 'Free poultry business plan template pdf' and multiple links to Shopify-hosted PDFs, likely to appear legitimate. The ML classifier strongly indicates maliciousness, and the presence of a redirector link confirms a malicious intent to lead the user to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=free+poultry+business+plan+template+pdf
    • http://files.withouthindrance.com/uploads/1/3/1/6/131637014/rideludorirap-mimes.pdf
    • http://files.impunity.site/uploads/1/3/2/6/132681204/lefopogi.pdf
    • http://ropezogo.kecorcoran.com/uploads/1/3/0/8/130874284/ralalonu-feroluvo.pdf
    • http://files.westboroserve.org/uploads/1/3/0/7/130775347/lumujabexonotu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/4347/1010/files/36699488791.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73792904944.pdf
    • https://cdn.shopify.com/s/files/1/0431/5122/9089/files/69672859417.pdf
    • https://cdn.shopify.com/s/files/1/0433/3030/6203/files/54226426285.pdf
    • https://cdn.shopify.com/s/files/1/0429/6428/7651/files/14143227404.pdf
    • https://cdn.shopify.com/s/files/1/0429/7952/4759/files/netgear_wn_2000_rpt_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/1992/6679/files/bobudu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/bohemian_rhapsody_acordes_piano.pdf
    • https://cdn.shopify.com/s/files/1/0435/5024/5028/files/69141293902.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/28311094342.pdf
    • https://cdn.shopify.com/s/files/1/0429/6222/3263/files/kupujagawomakidukodu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0625/4494/files/4769328416.pdf
    • https://cdn.shopify.com/s/files/1/0432/0994/9341/files/10319380809.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_off0000a343.bin
0cef9afa3ffbf5242e82694124959f4e3d345a524b4c4c962cbc59843bab3eed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA343 5384 bytes
font_01_sfnt_off0000b57a.bin
97e92394911d9d7981989937f9de6ed6ac9b2f0561b268f3f183c189a6e32239		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB57A 10212 bytes

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