Malicious PDF — malware analysis report

Static analysis result for SHA-256 573e1b68d34f9698…

MALICIOUS

PDF

40.7 KB Created: 2020-08-31 02:01:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 332a4ec6fa4fc85197844f850945d964 SHA-1: c045d28ad6b49672994fc797faae02066d352b08 SHA-256: 573e1b68d34f96980a0b8a29e9623d06631779a290d5b6ed8b079ec83fd7c7a8
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body itself contains the URL 'https://ttraff.ru/wix?keyword=parsec+multiple+controllers', which is flagged as a malicious redirector. This suggests the PDF is designed to lure users into clicking malicious links, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=parsec+multiple+controllers
    • https://cdn.shopify.com/s/files/1/0430/8054/8503/files/85714154102.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7770/files/bimusofivep.pdf
    • https://cdn.shopify.com/s/files/1/0433/7297/0133/files/wubikevofi.pdf
    • https://cdn.shopify.com/s/files/1/0466/2794/6661/files/mosiniwozujoti.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5900/files/4002033783.pdf
    • https://cdn.shopify.com/s/files/1/0437/4714/7928/files/29030040856.pdf
    • https://cdn.shopify.com/s/files/1/0435/6017/3717/files/rexidegujavekowowapukama.pdf
    • https://cdn.shopify.com/s/files/1/0429/2945/5271/files/24497816243.pdf
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/95366446557.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/mimaligasobexeladake.pdf
    • https://cdn.shopify.com/s/files/1/0432/8436/5476/files/bediwotujeg.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_off0000627f.bin
dc296ba9f7cab22efad8a6aa5ab24b44350d6a9d075a4a0721d76771b35143af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x627F 5080 bytes
font_01_sfnt_off000073a5.bin
4148240e137970da8705b60cd8e3d2918c7be8fc717bb93eee0507d17b58f67e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A5 10228 bytes

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