Malicious PDF — malware analysis report

Static analysis result for SHA-256 41919221b587efe6…

MALICIOUS

PDF

37.9 KB Created: 2020-08-19 01:06:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c5843f6542baef42e5c87b823c4a323 SHA-1: e09d9a5c16aea3a98a999b7914b8d7da577c9a7c SHA-256: 41919221b587efe6d9d63ca461587cb164fe3a62ddbe2854001896ba5d3bf2c7
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector infrastructure (ttraff.com), suggesting a potential phishing or malware distribution attempt. The document body contains garbled text along with the primary malicious URL, further indicating a malicious intent to lure users to external content. No scripts were extracted, and the primary threat appears to be the malicious redirection.

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.com/pify?keyword=little+more+video++chris
    • http://files.martinlutz-music.dk/uploads/1/3/1/4/131406379/likegijokiv.pdf
    • http://files.umstrokelab.com/uploads/1/3/0/9/130969220/majajinudoj.pdf
    • http://fijini.littlehartspreschool.com/uploads/1/3/1/3/131398539/9064b9bb.pdf
    • http://files.stingrayepoxyworks.com/uploads/1/3/0/9/130969300/8136594.pdf
    • https://cdn.shopify.com/s/files/1/0435/5801/1035/files/social_franchising.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/erika_moka_uncensored.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7430/files/tic_tac_toe_java_program.pdf
    • https://cdn.shopify.com/s/files/1/0435/5509/4677/files/96784983164.pdf
    • https://cdn.shopify.com/s/files/1/0429/9096/0799/files/46484298263.pdf
    • https://cdn.shopify.com/s/files/1/0437/2224/4250/files/future_ds2_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/19463184481.pdf
    • https://cdn.shopify.com/s/files/1/0440/1286/3638/files/checklist_for_android_app_submission.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72274594547.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_off000057b5.bin
9d1f357203f66fdd3a36b126bda65e7c677beff4fa8e7cd3188dd97ab27d2b7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57B5 4972 bytes
font_01_sfnt_off00006881.bin
1cbf3f01865268e6573b2f8e002b4820fd3b7154ec3c194b7322bb06246b8dd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6881 9996 bytes

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