Malicious PDF — malware analysis report

Static analysis result for SHA-256 0496cde545831e77…

MALICIOUS

PDF

253.2 KB Created: 2020-08-11 01:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d20d12e59f440d1659391e16d2ee5ea SHA-1: ec38971f3174b7b313462804daf65e1d6672822a SHA-256: 0496cde545831e77d1f1ddae9e398673ec13cfdc161793b17c4e44d9a3fe11ff
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains heuristics indicating it is a malicious redirector and uses social engineering lures for advance-fee scams and fake browser updates. The embedded URL, 'https://ttraff.cc/pify?keyword=online+pdf+editor+to+ms+word', likely leads to a malicious site designed to trick the user into downloading a payload or providing sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=online+pdf+editor+to+ms+word
    • http://files.ericwildergraphics.com/uploads/1/3/0/7/130739112/7669853.pdf
    • http://files.saprac.org/uploads/1/3/1/4/131452935/e1e3eb75.pdf
    • http://files.wandagillespie.com/uploads/1/3/0/7/130738876/pepililidev.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0451/0469/3400/files/badger_5_insinkerator_manual.pdf
    • https://cdn.shopify.com/s/files/1/0439/1138/1147/files/fate_zero_opening_1.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/siwiziwepokizawokomeviv.pdf
    • https://cdn.shopify.com/s/files/1/0432/2403/9592/files/72878213600.pdf
    • https://cdn.shopify.com/s/files/1/0434/7258/4861/files/naxedibe.pdf
    • https://cdn.shopify.com/s/files/1/0435/6043/5873/files/21188918817.pdf
    • https://cdn.shopify.com/s/files/1/0430/6914/5241/files/50325048065.pdf
    • https://cdn.shopify.com/s/files/1/0436/4160/2208/files/98541673982.pdf
    • https://cdn.shopify.com/s/files/1/0429/2640/7833/files/zejovikozox.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/wemesirafetupani.pdf
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/xerelaridiravaleko.pdf
    • https://cdn.shopify.com/s/files/1/0438/1320/8226/files/60686006997.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_off0003a4c8.bin
2948070d99463d926b82a17a2efb84c8cd86d35c0fabebeb78c2280cef96f790		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A4C8 5096 bytes
font_01_sfnt_off0003b61a.bin
34509ccd38511604c1a106293acef71ff6ac39f19274cb38c13fcf13550bb2c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B61A 15728 bytes

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