Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c20972dcd95f78f…

MALICIOUS

PDF

67.5 KB Created: 2020-08-31 16:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: baf01f7e0e6977dff0523ef36179e701 SHA-1: 0c450645ec3e5c0a80090f943c9aa3024cb6f25b SHA-256: 0c20972dcd95f78f545cbb58f692a3c0bc506d03a91e979b91c90e643fd05917
202 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, containing lottery or prize language combined with parcel delivery requirements. It embeds numerous links, with one identified as a known malicious redirector at 'https://ttraff.com/wix?keyword=bhojpuri+video+gana+movie'. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to deceive users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.
  • 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.com/wix?keyword=bhojpuri+video+gana+movie
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/8885/5718/files/30952112311.pdf
    • https://cdn.shopify.com/s/files/1/0434/2012/3293/files/9807149963.pdf
    • https://cdn.shopify.com/s/files/1/0443/8504/2598/files/back_stretches.pdf
    • https://cdn.shopify.com/s/files/1/0431/7518/2496/files/66244595833.pdf
    • https://cdn.shopify.com/s/files/1/0432/8590/5576/files/95094323998.pdf
    • https://static.usrfiles.com/ugd/cbe7f7_92a249fbee1c46e8925292121f11869d.pdf
    • https://static.usrfiles.com/ugd/7c30af_076e98f6b7af46c38fd6ba80da5d5105.pdf
    • https://static.usrfiles.com/ugd/760101_c7600d83e8504b93abc708791903f8ae.pdf
    • https://static.usrfiles.com/ugd/e1c37d_5c44646b890948d29a01f9fb3f72aed6.pdf
    • https://static.usrfiles.com/ugd/ceb2e8_25f328b746aa42128adb5bac1a1d7bad.pdf
    • https://static.usrfiles.com/ugd/469aea_c15384672b3c4ff692a086c6bffb29ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_666dccc875de4a9b890f7e5c2c0f4a59.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e7ea167dad844d7a45034247fd705cd.pdf
    • https://static.usrfiles.com/ugd/b7306e_9013b878a4eb41f394d06b55d4751cc5.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076e5.bin
e14c5b200042b25bd91481efeb698da67e8b6f89ec8718046e1ebf1cb1917e58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76E5 15896 bytes
font_01_sfnt_off0000a9a4.bin
e7c2c3ceb75cd912bdccbc86caac2a7eac633cc3fa74b10f6ef0651f7fa32cc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9A4 5348 bytes
font_02_sfnt_off0000bbbb.bin
6820488383fe1be2765739a134c8a00d4f1175c5b549800e6db6f08315c182f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBBB 15148 bytes
font_03_sfnt_off0000ebad.bin
9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAD 16092 bytes

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