Malicious PDF — malware analysis report

Static analysis result for SHA-256 efcd59bea75b1bb4…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 00:15:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8bd43969c6b398446332021f1ea679c1 SHA-1: 50761fc7d20b8def5324ef283e782b07160596ba SHA-256: efcd59bea75b1bb421e6736045804138ac440007da62b29f5dc81716eb68e947
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate the presence of a malicious redirector link and a link farm, suggesting an attempt to distribute malware or phish for information. The document body also contains a call-to-action phrase, reinforcing the lure. The primary malicious URL identified is https://ttraff.com/pify?keyword=pixark+pc+free+full+version.

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=pixark+pc+free+full+version
    • http://files.celandscapers.com/uploads/1/3/1/8/131871462/jajoja.pdf
    • http://files.dorabramden.com/uploads/1/3/1/3/131382141/3729828.pdf
    • https://cdn.shopify.com/s/files/1/0428/7430/6719/files/177383894.pdf
    • https://cdn.shopify.com/s/files/1/0439/5335/6955/files/gekovitamotopojipemunapu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/cutting_edge_pre_intermediate_third_edition.pdf
    • https://cdn.shopify.com/s/files/1/0438/4161/8082/files/microsoft_access_tutorialspoint.pdf
    • https://cdn.shopify.com/s/files/1/0429/8371/9071/files/22581689671.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/siwizobudavegi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/47025307949.pdf
    • https://cdn.shopify.com/s/files/1/0434/1805/8901/files/54374937263.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/70083284666.pdf
    • https://cdn.shopify.com/s/files/1/0430/7399/4905/files/71682940658.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/duchess_of_malfi_themes.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_off0000656a.bin
0f298c9c1bafafff581393f88e6c8c91449d52b5872517b14bca42f3c3090691		 pdf-font-stream PDF embedded font (sfnt) at offset 0x656A 5204 bytes
font_01_sfnt_off00007731.bin
0d84cd1e2d32f5b2f6e864a900f77487709529350c808f9b7ae7b9baae480fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7731 10016 bytes

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