Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eeec2a92bcdf47e…

MALICIOUS

PDF

37.6 KB Created: 2020-08-06 13:45:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d765cec3b9e5aedd616754ef5b4616c SHA-1: 6789e8da60c76ddc64a2b85902e3207b746c4e47 SHA-256: 3eeec2a92bcdf47ea30259441648ce360b9b18f8625508dcae29f4fc657c9d45
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, disguised as a download for an academic book. The document body, though heavily obfuscated, contains the same URL. The presence of a "download button" heuristic further supports the lure-based attack pattern. The PDF also contains a large number of links to other PDFs, likely for SEO manipulation or to obscure the malicious redirect.

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=cs6659+artificial+intelligence+book+pdf
    • http://files.chrislockett.com/uploads/1/3/1/4/131453818/3b4d17b1179d425.pdf
    • http://fadaf.aventinameetings.com/uploads/1/3/1/4/131438464/7814213.pdf
    • http://files.hawaiiafterschoolalliance.org/uploads/1/3/0/7/130775084/monaborupasi.pdf
    • https://cdn.shopify.com/s/files/1/0446/3670/0835/files/alliterated_sermon_outlines.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/imperialismo_educacion_y_neoliberalismo_en_america_latina.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/98915264976.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nudukesobiji.pdf
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/ripitem.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1764/files/composing_programs.pdf
    • https://cdn.shopify.com/s/files/1/0435/8576/5535/files/dulugeniwurutonigivew.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vazakiliduvapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5768/4375/files/wejivupomuwes.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_off00005342.bin
c02dc5dd38824169f123f835d9d949653d30e5b87b08fb0257c90e11af195843		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5342 5864 bytes
font_01_sfnt_off00006740.bin
2ac3afeda0ef685b56c18091b47788ad2d6e34e967ff294ed2b422387685a645		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6740 10132 bytes

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