Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fec9a751b75201e…

MALICIOUS

PDF

44.0 KB Created: 2020-08-06 06:41:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a72211c82d5e10548cd43fd3f3320b1 SHA-1: 428d8d7b8f24bcd2ae59d2c7693cdbb1bb4c6bb7 SHA-256: 3fec9a751b75201eecc6bb7b9533c684fe5a3f78cd3744b30245cad38e1493be
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=autodesk+maya+basic+tutorials+pdf`. This URL is designed to obscure the final destination and likely leads to a phishing page or malware download. The document also exhibits characteristics of a link farm, with numerous external PDF links, many hosted on `cdn.shopify.com`, suggesting an attempt to manipulate search engine results or distribute content broadly. 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.cc/pify?keyword=autodesk+maya+basic+tutorials+pdf
    • http://files.fredoniapubliclibrary.com/uploads/1/3/0/8/130874493/3f3ddaf95884b9.pdf
    • http://files.folsomstrings.com/uploads/1/3/0/7/130776819/0f6dd.pdf
    • http://vepetakuk.gilmsp.com/uploads/1/3/1/4/131407995/rafovotapeg_bedumirezel_fubelutaxufam.pdf
    • http://gakiwo.wayfarerspark.co.uk/uploads/1/3/1/3/131379730/japoriwekowuwanidodu.pdf
    • https://cdn.shopify.com/s/files/1/0440/9065/4885/files/kogatidakixunolivogav.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78683638278.pdf
    • https://cdn.shopify.com/s/files/1/0435/2435/8308/files/nugoxikidewekug.pdf
    • https://cdn.shopify.com/s/files/1/0432/2839/7732/files/fofazuzinerunarodima.pdf
    • https://cdn.shopify.com/s/files/1/0427/8370/3206/files/94717062056.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/67503216261.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/pcr_principle.pdf
    • https://cdn.shopify.com/s/files/1/0429/9928/3863/files/61552040537.pdf
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/vitifovob.pdf
    • https://cdn.shopify.com/s/files/1/0437/6703/8109/files/59938436566.pdf
    • https://cdn.shopify.com/s/files/1/0433/0710/6462/files/sisudewa.pdf
    • https://cdn.shopify.com/s/files/1/0432/3606/5435/files/43350679441.pdf
    • https://cdn.shopify.com/s/files/1/0434/6612/9574/files/zofuxe.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_off00005c8d.bin
bfd38c27aaf407ee95da44447dbc12986636d68e547bc5c67698ece830f7e33d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8D 4032 bytes
font_01_sfnt_off00006adc.bin
f289c64bf84c50ceaae1f9de2cbcbc842037832b746a2a0548a59aca818cc36c
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADC 5596 bytes
font_02_sfnt_off00007dd6.bin
28097faf3853d45976759095abe8c4cacf0fdedbc071951e89e80f82802df64f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD6 10620 bytes