Malicious PDF — malware analysis report

Static analysis result for SHA-256 d395e3aee2f48bf0…

MALICIOUS

PDF

40.9 KB Created: 2020-09-09 16:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4d970680cc3f9fac8efc44e22d37287 SHA-1: 633c3d988a583f394ffa2816e216fb429537072f SHA-256: d395e3aee2f48bf05bdb05038e0c59b1962e28cd6093b10411265c87f4c7a637
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external PDF links, characteristic of a link farm used for SEO poisoning. The presence of a 'download button' lure further supports the malicious intent. The primary malicious URL is https://ttraff.club/wix?keyword=ceiling+function+in+crystal+reports, which redirects to other potentially malicious content.

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.club/wix?keyword=ceiling+function+in+crystal+reports
    • http://files.yallbeetubin.com/uploads/1/3/0/7/130775025/215eb6dfa.pdf
    • http://files.northwestindianaoutdoors.org/uploads/1/3/1/1/131164519/metekasoxij.pdf
    • http://files.stmatthiasonline.org/uploads/1/3/1/4/131455475/pesukabakiguzep_vafixabit_bizikoras.pdf
    • http://files.hcaknights.com/uploads/1/3/2/6/132682232/2585195.pdf
    • https://static.usrfiles.com/ugd/735424_35e2d7544ddc46f7ad8ff48f6e4e2a9d.pdf
    • https://cdn.shopify.com/s/files/1/0434/8451/2418/files/direct_indirect_speech_practice_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/xizuxekasulixamowugi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4445/4051/files/canon_rebel_t6_video_format.pdf
    • https://cdn.shopify.com/s/files/1/0466/9007/4788/files/mozilla_firefox_for_windows_xp_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/7447/7464/files/93066943376.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/91101642771.pdf
    • https://cdn.shopify.com/s/files/1/0447/9424/9377/files/bearing_puller_skf.pdf
    • https://cdn.shopify.com/s/files/1/0439/1141/3912/files/zomojuvizatevewa.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_off00006194.bin
8f357fd5e0f85e725c30a40e2ade40ed9c181514b2600e2ea9da785add54390a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6194 5192 bytes
font_01_sfnt_off0000735f.bin
96a553126452bd31900c56d40619a9798adb0d4098a1a1961f7abd27df4341b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x735F 10420 bytes

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