Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c733670e9798978…

MALICIOUS

PDF

48.2 KB Created: 2020-08-12 16:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d511d3f8aee768a744528021cb3284a SHA-1: ce06d816a27694fac312ed4a4da26f08fbb9c823 SHA-256: 8c733670e97989782626cc5d7ddb704ac7eaea6417351e5b960ad1b0bca6aae8
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though partially corrupted, contains text related to 'Cahier des charges construction maison pdf' and the malicious URL, suggesting a lure to download a malicious file. The PDF also contains a large number of external links, many hosted on Shopify, indicating a link farm used for distribution.

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=cahier+des+charges+construction+maison+pdf
    • http://files.claregriffin.org/uploads/1/3/0/7/130776519/juwoseropeziw_xotusizo_lixarixiwav_wuwovikofi.pdf
    • http://files.ewbbu.com/uploads/1/3/2/6/132695467/2263740.pdf
    • http://files.theogkicks.co/uploads/1/3/1/8/131856723/guvapuk_vuwigokif_jagakoxuz.pdf
    • http://files.coopersmastiffs.com/uploads/1/3/1/0/131069950/worerifimirana.pdf
    • https://cdn.shopify.com/s/files/1/0429/0212/6751/files/windows_xp_sp3_activator.pdf
    • https://cdn.shopify.com/s/files/1/0437/8699/3816/files/6628126205.pdf
    • https://cdn.shopify.com/s/files/1/0433/3027/3434/files/verbo_sum_latino.pdf
    • https://cdn.shopify.com/s/files/1/0428/6863/7862/files/91995989602.pdf
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/alto_saxophone_lessons.pdf
    • https://cdn.shopify.com/s/files/1/0433/5756/9176/files/ripasimudopototeweg.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/wufegotirijuz.pdf
    • https://cdn.shopify.com/s/files/1/0438/6213/0853/files/diversity_of_vascular_plants.pdf
    • https://cdn.shopify.com/s/files/1/0440/5651/0616/files/12661426532.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5687/files/68061420764.pdf
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/agarose_gel_electrophoresis_practical.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_off00006bd8.bin
26a8e4ce40abacdd329113c2e147d6024bc7dba0b4e63378d714ba4dd63d01bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD8 5440 bytes
font_01_sfnt_off00007e2d.bin
da4f632b4e7788b437d01101bf2e3bfde1bf53c3e41b1a309f84217d8e45381b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2D 12032 bytes
font_02_sfnt_off0000a407.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA407 4324 bytes

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