Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdf856075854763d…

MALICIOUS

PDF

42.9 KB Created: 2020-07-11 17:20:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83fdfc6b574dfbdc7d7faf495b555dd9 SHA-1: b47090569988bbdd9ab3040f184b75a005e8ee69 SHA-256: cdf856075854763d72a58eb21639bfa683d8b2c250ffd7536b39df02423e2ec8
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, embedding numerous external links. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is likely used to obscure the final destination of the malicious payload. The document body contains garbled text but also includes the same suspicious URLs, reinforcing the malicious intent. The primary goal appears to be directing users to potentially harmful content through a deceptive link structure.

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=quimica+temas+basicos
    • http://files.mollycoddleparties.com.au/uploads/1/3/1/4/131438891/2003306.pdf
    • http://files.hkcofc.com/uploads/1/3/2/6/132683111/lobojevaresale_jojolurirukekof_nunaduwarutare_rulilik.pdf
    • http://files.saltyhairmamma.com/uploads/1/3/1/8/131856522/86bb5a.pdf
    • http://files.ab-accessories.com/uploads/1/3/2/7/132710638/3492235.pdf
    • http://files.faceofkenya.org/uploads/1/3/1/3/131379951/6323389.pdf
    • http://files.theroute92.com/uploads/1/3/0/8/130873973/zuguxizamuri.pdf
    • http://files.jesstopia.org/uploads/1/3/1/1/131164440/e9ac77647e8e.pdf
    • http://files.vanaudelanalytix.com/uploads/1/3/0/8/130814605/solitipu-rarufureboxaz.pdf
    • http://files.baguiosoundslightsrental.com/uploads/1/3/1/4/131452942/7363144.pdf
    • https://takipeximon.files.wordpress.com/2020/06/risajexono.pdf
    • https://fijimisu.files.wordpress.com/2020/06/68164444293.pdf
    • https://bakezizo.files.wordpress.com/2020/06/gazezoselenedule.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voriwatovetizejewadodo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tovaje.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dutevitijenunolekegek.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/1297022614.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ruwisosipopiwusanitilowaz.pdf
    • https://cdn.shopify.com/s/files/1/0430/3428/0087/files/92477443519.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13578549785.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006113.bin
e4d2a3f1b314d4b292ed05c3403db427ac88eca7243ddcb80f268a7dbe375801
pdf-font-stream PDF embedded font (sfnt) at offset 0x6113 4792 bytes
font_01_sfnt_off00007158.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7158 1800 bytes
font_02_sfnt_off000079e6.bin
bf64439a551b193fb163ac76465bad18755814ff172ff59381a54f0492b3583c
pdf-font-stream PDF embedded font (sfnt) at offset 0x79E6 10764 bytes