Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f36ecec23258567…

MALICIOUS

PDF

44.0 KB Created: 2020-08-02 18:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7cef3f567fe32988e383529261456ec SHA-1: 6174f9fd4816c8b997474ebbf0144dd5bb4b8c9e SHA-256: 0f36ecec232585679617e8c3eab0659889ec2c9216df04143fabf0d19e254c25
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to 'Bed bath and beyond mission statement' and the URL for the redirector, suggesting a phishing or scam lure. The presence of numerous other PDF links further indicates a link farm or redirection strategy.

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=bed+bath+and+beyond+mission+statement
    • http://files.refugeeradionetwork.net/uploads/1/3/1/8/131856188/vurajipedifasufukix.pdf
    • http://files.phototour.mobi/uploads/1/3/1/4/131437061/b345871631c.pdf
    • http://files.wiffrudd.com/uploads/1/3/1/3/131381614/bunonavujibidew.pdf
    • http://files.primepropertiescebu.com/uploads/1/3/0/8/130814101/74713edb1f.pdf
    • http://files.uwbcmn.org/uploads/1/3/1/3/131378852/xuzatelaj.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/3239/5426/files/8679381775.pdf
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/watinuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/comparative_anatomy_of_kidney_in_vertebrates.pdf
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/97210510261.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gikari.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/35209966956.pdf
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/idm_with_crack_filehippo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/80259606276.pdf
    • https://cdn.shopify.com/s/files/1/0431/7849/2062/files/zazitusuxafifovaluwaw.pdf
    • https://cdn.shopify.com/s/files/1/0434/1058/7800/files/gojidare.pdf
    • https://cdn.shopify.com/s/files/1/0434/0632/7957/files/tagapinujataguronevox.pdf
    • https://cdn.shopify.com/s/files/1/0434/9070/5574/files/gedapoludalefozipi.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_off00006e0a.bin
c50a1814e0b3d785d403bd06cb3bdb017b79ab0069ab7a810f230586d7b50ec2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0A 5228 bytes
font_01_sfnt_off00007fb5.bin
4febb8fff85f5649564893abe5156c2d2ead846475d75f345ad8183a6d7452c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB5 10288 bytes

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