Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a8017564f2bfe6…

MALICIOUS

PDF

37.0 KB Created: 2020-08-07 04:04:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 827a0825b1436f26e11a76896472784a SHA-1: b220b9d18e3531eaa56d78a4bfc82ea9f6ef5bd6 SHA-256: e0a8017564f2bfe68e9cd756545440ec56a686a9ced4eb118a2308159b00f9ab
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDFs hosted on various domains. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains text related to 'Christmas carols lyrics pdf free' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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=christmas+carols+lyrics+pdf+free
    • http://files.elphinstoneaero.club/uploads/1/3/1/6/131607866/sibajifafilira.pdf
    • http://files.biofordp.net/uploads/1/3/0/7/130739204/2620931.pdf
    • http://files.equineexposure.ca/uploads/1/3/0/7/130775529/3897131.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/55183095856.pdf
    • https://cdn.shopify.com/s/files/1/0438/3267/2418/files/curso_de_frances_para_principiantes.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/welajutewagegisagawa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/86442193562.pdf
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/nagosuvuvagegetudoga.pdf
    • https://cdn.shopify.com/s/files/1/0431/6309/1110/files/rangitaranga_in_usa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdf
    • https://cdn.shopify.com/s/files/1/0438/4302/7106/files/academic_reading_ielts_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/0933/4696/files/kivupapujobajipawujego.pdf
    • https://cdn.shopify.com/s/files/1/0431/8330/8955/files/temeremosiwugaba.pdf
    • https://cdn.shopify.com/s/files/1/0431/5139/2922/files/15345277409.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_off000052b0.bin
c7953ab61ec5a795775ddc836bb4c6ea443ee09891e12f676a3ff1ef038097e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52B0 5404 bytes
font_01_sfnt_off000064e6.bin
e468a30134942cf25bed393ca0a00260b97fd7fdabd9372992d493519201af96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E6 10004 bytes

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