Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e8c19373aa86727…

MALICIOUS

PDF

41.5 KB Created: 2020-08-07 02:23:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03322148e86eda28b343b5849dd80055 SHA-1: 5dfcef418b55a302e2c713a0dc966918a3392cb9 SHA-256: 3e8c19373aa86727cf5f17c583447ecd72bce2a0420dddf69955ac344d727fc6
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Subway franchise operations manual pdf'. The primary malicious link is https://ttraff.cc/pify?keyword=subway+franchise+operations+manual+pdf, which likely leads to further malicious content. The presence of a large number of external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=subway+franchise+operations+manual+pdf
    • http://files.shadyacresaussies.net/uploads/1/3/1/4/131437725/vexikepun.pdf
    • http://files.ladlelove.com/uploads/1/3/1/1/131164573/pikumivixeniga.pdf
    • http://files.saint-anns.com/uploads/1/3/1/6/131606813/1b763.pdf
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/49932849133.pdf
    • https://cdn.shopify.com/s/files/1/0432/2518/6466/files/39341210220.pdf
    • https://cdn.shopify.com/s/files/1/0437/7224/8215/files/pupuxipirotuguvon.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/lipijexowon.pdf
    • https://cdn.shopify.com/s/files/1/0433/6871/0309/files/64729044086.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9160/files/31779907148.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2692/files/karoxoxev.pdf
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/ecology_notes.pdf
    • https://cdn.shopify.com/s/files/1/0429/7929/5385/files/santa_bring_my_baby_back_to_me_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0431/0899/1143/files/taxexeveloniwewoluva.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/romagonezokowemigopix.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006228.bin
7b3cfaeb1b399b1f4387b07e2b810bbdfc6b35191fe7944e1557a7a69a9c07d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6228 5832 bytes
font_01_sfnt_off000075f1.bin
059b863791606d86e6f651e2ff1aeda9970ecf233a7589f7417f406cda2149da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F1 10452 bytes

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