Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ce589d3177857a…

MALICIOUS

PDF

37.3 KB Created: 2020-08-10 23:56:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5040d153e0d59779943edd3507c4d43f SHA-1: 4c45c3692739e8d5b58cfeab0ffd6321131b12c4 SHA-256: 54ce589d3177857ab891a43cd9801689522645836ed9ec48b0a7ed94655f0172
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to its inclusion of a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. One of the primary links points to a known malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it may be a lure document designed to host or redirect to malicious sites.

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.ru/pify?keyword=an%25C3%25A1lise+do+conte%25C3%25BAdo+bardin+pdf
    • http://files.glendalebc.org/uploads/1/3/0/7/130776110/migovasuruwemakim.pdf
    • http://sabama.plantcitypsych.com/uploads/1/3/1/4/131407005/favadubemavefiniwowi.pdf
    • http://kiluf.ruthiemadison.com/uploads/1/3/2/7/132740214/jupusukulel.pdf
    • http://tosufe.birthrightgeauga.org/uploads/1/3/2/6/132682076/kukigametedaj_sowatibulenite.pdf
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/piganoxegusumarijaga.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4488/files/cub_cadet_rzt_54_parts.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7367/files/35690397216.pdf
    • https://cdn.shopify.com/s/files/1/0445/5848/3620/files/mii_qr_codes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1103/files/kipetatezi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4053/6736/files/vuzatajevopo.pdf
    • https://cdn.shopify.com/s/files/1/0436/6172/1765/files/8260449083.pdf
    • https://cdn.shopify.com/s/files/1/0431/2465/4241/files/tevijovadigugazu.pdf
    • https://cdn.shopify.com/s/files/1/0428/5625/1559/files/52217286364.pdf
    • https://cdn.shopify.com/s/files/1/0429/5393/2966/files/32908773157.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/22149776779.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_off00004f91.bin
8ad4fc83a53eb33b099b79ab51b66a01c08efbe2072e81e3c4228bf4cd996d3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F91 5628 bytes
font_01_sfnt_off000061ec.bin
0ca89c3addb5e85018b0f450c88502b4d9253d7a53f8aba7163fecc136cf2617		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61EC 12100 bytes

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