Malicious PDF — malware analysis report

Static analysis result for SHA-256 422c6ceec6ca1580…

MALICIOUS

PDF

35.3 KB Created: 2020-08-17 09:33:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b512144c750070cb8ba7048c6799941 SHA-1: 5c70c86e1239ab2c649ac5e1291e1335d28ee1a9 SHA-256: 422c6ceec6ca1580b62536ed867cad17fa4a073383e8096b36939f9f99ce647e
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body text, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=cracking+the+pm+interview+ebook', suggesting a lure to download an ebook. This link is associated with known malicious redirector infrastructure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to distribute malicious content.

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=cracking+the+pm+interview+ebook
    • http://files.christophernewhook.studio/uploads/1/3/0/7/130740586/dc5b810a.pdf
    • http://xezekakow.tnlsfranklin.com/uploads/1/3/1/8/131856190/jovitas-wixizokas-jakusojome.pdf
    • http://rosobeba.gregglakeassociation.com/uploads/1/3/0/7/130776394/69f022b7e380b.pdf
    • http://lobib.eveningstreetharriersxc.com/uploads/1/3/0/7/130739267/5a128b6b36f7.pdf
    • https://cdn.shopify.com/s/files/1/0432/7686/1606/files/vekaxugopufikujagivedowi.pdf
    • https://cdn.shopify.com/s/files/1/0439/8183/2350/files/50872479688.pdf
    • https://cdn.shopify.com/s/files/1/0431/0702/5060/files/angai_geet_marathi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5305/6149/files/daturoxajebug.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/xogigex.pdf
    • https://cdn.shopify.com/s/files/1/0427/9051/8940/files/dopurologilanufa.pdf
    • https://cdn.shopify.com/s/files/1/0438/9496/4392/files/anthracnose_of_grapes.pdf
    • https://cdn.shopify.com/s/files/1/0437/7201/8845/files/wuvitixap.pdf
    • https://cdn.shopify.com/s/files/1/0432/3747/4466/files/excel_2020_vba_tutorial_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/daft_punk_discovery_zip.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/vomanimixilorek.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2557/files/pasisifakar.pdf
    • https://cdn.shopify.com/s/files/1/0429/4279/1839/files/nagig.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_off00004c63.bin
78240a4f9d8c2b8aee7182efe2f8409664d3eaa42b76d46273f9b7369da5633a
pdf-font-stream PDF embedded font (sfnt) at offset 0x4C63 5400 bytes
font_01_sfnt_off00005ea3.bin
07ef2fea1ce91e837ba2072293baf95e217bfffb48f132a9f6842f1ad25cc9b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA3 9868 bytes