Malicious PDF — malware analysis report

Static analysis result for SHA-256 a687cb612b96d29d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-20 22:58:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 145894d749f03612c827fbbb1a8be776 SHA-1: 5bf00520e36aa51cce02859ca0db6ac8856646e3 SHA-256: a687cb612b96d29d0f8e9d9f0c63540ff35bfef7fe348535a9527f7b7555b952
128 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector URL, which is a common tactic for phishing and malware delivery. The document body and heuristics indicate a lure related to document conversion, combined with a "download button" heuristic, suggesting a social engineering attempt to trick the user into clicking the malicious link. The primary malicious URL identified is ttraff.com, which redirects to a Shopify domain hosting a PDF file.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=pdf+to+editable+word+converter+ocr
    • http://files.chippewafsc.com/uploads/1/3/1/3/131397934/riwokotowekowewov.pdf
    • http://kenaga.bioactivtherapy.com/uploads/1/3/0/9/130969873/8438340.pdf
    • http://nuzabarow.listerrents.com/uploads/1/3/1/4/131437237/parizugixori.pdf
    • http://bekedapej.mccoyagency.com/uploads/1/3/1/3/131384709/a3333caca16088.pdf
    • http://files.eceti.org/uploads/1/3/0/9/130969472/8651358.pdf
    • https://cdn.shopify.com/s/files/1/0448/2826/2560/files/pusop.pdf
    • https://cdn.shopify.com/s/files/1/0431/5460/4198/files/81179118822.pdf
    • https://cdn.shopify.com/s/files/1/0431/3432/0794/files/8544267830.pdf
    • https://cdn.shopify.com/s/files/1/0433/8630/6710/files/55460315139.pdf
    • https://cdn.shopify.com/s/files/1/0436/4002/9344/files/kevidixomojufifaxupasib.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/juwafunoxazodoparidim.pdf
    • https://cdn.shopify.com/s/files/1/0437/7490/2423/files/48946555712.pdf
    • https://cdn.shopify.com/s/files/1/0430/8100/7255/files/pixoveterobagitajasapanik.pdf
    • https://cdn.shopify.com/s/files/1/0432/2207/3506/files/wurolumanuzevedukowoje.pdf
    • https://cdn.shopify.com/s/files/1/0434/6042/7928/files/42856125807.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bovegutug.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_off000062a5.bin
289a85b816f360e2b852b5707adcd6b597643aff0d642b9dd9ee38b9c7a3c20a
pdf-font-stream PDF embedded font (sfnt) at offset 0x62A5 5128 bytes
font_01_sfnt_off0000743c.bin
7efa5377e239d0a5d98428b48fb63514a8f6cc992e61e27e1370fa738142cce9
pdf-font-stream PDF embedded font (sfnt) at offset 0x743C 10328 bytes