Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6039c8a2da95214…

MALICIOUS

PDF

49.3 KB Created: 2020-08-21 14:23:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b489097410cbed3fdf305a4cb65c8fa SHA-1: 15fbfc287b033076df6c16140acf825d69742ab4 SHA-256: e6039c8a2da952140cd5166fd040f436e548e2c61f27e40a7154090abef5c150
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a prominent link to 'ttraff.com', identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'street basketball games apk', suggesting a lure. The PDF also hosts a large number of external links, many pointing to Shopify, likely for SEO manipulation to increase visibility. The ML classifier strongly flagged this PDF as malicious.

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=street+basketball+games+apk
    • http://tukov.dbtfamilyskills.com/uploads/1/3/2/6/132681504/dofazifiwoxek.pdf
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/57189911403.pdf
    • https://cdn.shopify.com/s/files/1/0459/2471/2615/files/ignou_assignment_submission_front_page.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/kalanchoe_gastonis_bonnieri.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4339/files/defovunabinipetizajodo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sogogetuxupoxex.pdf
    • https://cdn.shopify.com/s/files/1/0430/1537/2949/files/19162514047.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27347714529.pdf
    • https://cdn.shopify.com/s/files/1/0431/6866/1670/files/mutaveripatud.pdf
    • https://cdn.shopify.com/s/files/1/0435/9775/8622/files/reproduccion_animal_biologia.pdf
    • https://cdn.shopify.com/s/files/1/0434/4505/9749/files/genufonisoxox.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cf8.bin
efc5c129c802dbee9c5076602cf08cab624148492b8cfa244d70b6d260aaad2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF8 6020 bytes
font_01_sfnt_off00007146.bin
cf18bec83ff3be0f5d38254b5c54aa88f58006c27244bcc890399fa91abd6087
pdf-font-stream PDF embedded font (sfnt) at offset 0x7146 4972 bytes
font_02_sfnt_off0000822a.bin
cd65b0de4a738548f259dc524421e197ddac44af872422daebf242286df1bc16
pdf-font-stream PDF embedded font (sfnt) at offset 0x822A 11472 bytes
font_03_sfnt_off0000a85d.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0xA85D 4324 bytes