Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7868d5922b59a90…

MALICIOUS

PDF

40.6 KB Created: 2020-08-04 11:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a2e40710c6de749922e2a3e57b293f4 SHA-1: fa9794f5e490a0c8ab146a5c0d6724f9c4f94638 SHA-256: e7868d5922b59a900b8a27a94397c6839ec58dceca8570bf6cca017b81d252a7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains numerous links, including one pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=aneurisma+abdominal+sintomas+pdf'. The document body, though partially corrupted, suggests a lure related to 'Aneurisma abdominal sintomas pdf'. The presence of a link farm and a malicious redirector indicates an attempt to lead the user to a harmful destination, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.ru/pify?keyword=aneurisma+abdominal+sintomas+pdf
    • http://files.jestersmvp.com/uploads/1/3/1/8/131871614/xevokoreda.pdf
    • http://files.angusyoungroofing.co.uk/uploads/1/3/1/4/131454501/ef0e88d.pdf
    • http://files.friedmanfrost.com/uploads/1/3/0/7/130739806/3ed6e28a4.pdf
    • https://cdn.shopify.com/s/files/1/0430/3483/7149/files/painted_on_my_heart.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/12444409437.pdf
    • https://cdn.shopify.com/s/files/1/0444/0273/7318/files/bicarbonate_de_soude_utilisation.pdf
    • https://cdn.shopify.com/s/files/1/0432/7079/9516/files/fanukutemotifekubaxob.pdf
    • https://cdn.shopify.com/s/files/1/0438/2903/5158/files/puwukuwelifataravulazab.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/lawovorewevebudigugulav.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/zunafapavenerul.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/39025_lbj_service_road.pdf
    • https://cdn.shopify.com/s/files/1/0429/9912/0033/files/zonamevavi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/70160349598.pdf
    • https://cdn.shopify.com/s/files/1/0432/0532/9064/files/sutugetodapagejenezuzas.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/wexizabidebovanuzizobivu.pdf
    • https://cdn.shopify.com/s/files/1/0433/2696/3865/files/idylis_air_conditioner_manual.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_off000060a6.bin
0f8f3718e2f49cba75250a1fa8115f55d7e11888192260b60c64261db301c683		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60A6 5316 bytes
font_01_sfnt_off00007299.bin
0e9c58fdf71cf38dfb1cdd901af9fb59af49cd1ae491757abf9403c231c6ab5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7299 10420 bytes

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