Malicious PDF — malware analysis report

Static analysis result for SHA-256 882aa8ec41a727c9…

MALICIOUS

PDF

60.5 KB Created: 2020-07-24 21:31:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55aa034800f5b68903672a83dcb935a2 SHA-1: bf56b0745ed6c7683ceebc258dc651cd8ed79563 SHA-256: 882aa8ec41a727c97eb5f6af7ae43b493c8b23a5c07af5a5cf0065a63b1b3023
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf and references 'Albert Camus The Plague', likely a lure to entice users to click the malicious link. The presence of a link farm heuristic further supports the malicious intent of distributing links to external 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.com/pify?keyword=albert+camus+the+plague+pdf
    • http://files.francesandkevin2019.org/uploads/1/3/0/7/130740521/gopidomuva.pdf
    • http://files.casparmckeever.com/uploads/1/3/1/4/131438449/ca906f12.pdf
    • http://files.superjumppartyzone.com/uploads/1/3/0/8/130874668/13c3a2.pdf
    • http://files.ucfootball.co.nz/uploads/1/3/0/7/130775776/757eb.pdf
    • http://files.tatcor.com/uploads/1/3/0/7/130739287/170a8d3.pdf
    • https://cdn.shopify.com/s/files/1/0430/3713/0914/files/1824046893.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5670/9273/files/88647030472.pdf
    • https://cdn.shopify.com/s/files/1/0428/5654/6463/files/disepotufove.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/kodiwebezup.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/40313354442.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zonamanasalusowalu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3380/5471/files/tafunejinanororelujifised.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6237/files/jisebupotokarikagefara.pdf
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/76350153323.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/98980573343.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_off0000b02b.bin
e87ff5096831704a05262bbb8484885e89cd8249c297d7258197043b99431696		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB02B 5316 bytes
font_01_sfnt_off0000c23c.bin
caeb563587f92bc18011a40f328bb18ba8b1bd41ee28eb5a74f24cefafb7c727		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC23C 10268 bytes

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