Malicious PDF — malware analysis report

Static analysis result for SHA-256 919fc46460b8c75d…

MALICIOUS

PDF

37.6 KB Created: 2020-08-08 15:24:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ea1b0ce6a94e0d625eeb6cb56f70c43 SHA-1: 0bfd71b00f86e7859e304cb3bd71fb67059135a7 SHA-256: 919fc46460b8c75da03633939c3587ef1a3f6d834258a3b04b6c840b89f9d962
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, 'https://ttraff.com/pify?keyword=practical+meteorology+pdf', is identified as a malicious redirector. This suggests the document is designed to act as a link farm, potentially leading users to malicious sites or further payloads.

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=practical+meteorology+pdf
    • http://files.teamemfield.com/uploads/1/3/1/8/131856624/tigazux-maxezide.pdf
    • http://files.bluecornconsultingllc.com/uploads/1/3/1/8/131856919/6314147.pdf
    • http://files.brightonfd.com/uploads/1/3/0/9/130969192/rogilagavoxidojora.pdf
    • https://cdn.shopify.com/s/files/1/0431/4827/9957/files/bopudoveraramukevu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2583/3884/files/80077406103.pdf
    • https://cdn.shopify.com/s/files/1/0437/7876/9045/files/15303406979.pdf
    • https://cdn.shopify.com/s/files/1/0435/8737/1171/files/98108506081.pdf
    • https://cdn.shopify.com/s/files/1/0434/2035/2677/files/17914886891.pdf
    • https://cdn.shopify.com/s/files/1/0435/6508/8917/files/48108818859.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48466687054.pdf
    • https://cdn.shopify.com/s/files/1/0433/5963/3559/files/52787852327.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/rikiwufirodomekizifef.pdf
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/fozagesixiberitupimizidan.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_off00004877.bin
b544d4d8a047049db88978a306b7d43fbb9a2d47f5ec1089a123a357136738bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4877 5080 bytes
font_01_sfnt_off000059bd.bin
76e1daca59e554d1b309674651697686073b67088a079a40780f490d8e426c4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59BD 10016 bytes
font_02_sfnt_off00007bf9.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF9 4324 bytes

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