Malicious PDF — malware analysis report

Static analysis result for SHA-256 35205c4315eb6482…

MALICIOUS

PDF

56.6 KB Created: 2020-08-03 11:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 618932672da075c6392691a5f76012f5 SHA-1: d479295e5d76dbd2e8c4d9e49f4db3dd3040812c SHA-256: 35205c4315eb6482fa0b2f048642d91964ec329c87a244e08802327dbe2eb449
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is embedded within the document body, disguised as a link to an academic PDF. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic. The primary intent appears to be redirecting the user to a malicious site.

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=applied+mathematics+pdf+for+bsc+it
    • http://files.jamesjordanfoundation.com/uploads/1/3/1/3/131384281/papiko-vogad.pdf
    • http://files.gibbycampbell.com/uploads/1/3/1/3/131380469/wawiwesa.pdf
    • http://files.bkllc.com/uploads/1/3/0/7/130774962/6791817.pdf
    • https://cdn.shopify.com/s/files/1/0428/7974/6207/files/41610036411.pdf
    • https://cdn.shopify.com/s/files/1/0434/3503/2737/files/78091027365.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.pdf
    • https://cdn.shopify.com/s/files/1/0432/6424/5925/files/difuxisosux.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6325/files/xotijitisikitaril.pdf
    • https://cdn.shopify.com/s/files/1/0437/2283/4071/files/foxodufozipup.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/towunasukobanaba.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/58798844907.pdf
    • https://cdn.shopify.com/s/files/1/0433/8489/7701/files/nozolakuvezov.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27947700243.pdf
    • https://cdn.shopify.com/s/files/1/0428/4583/1335/files/39238580215.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_off0000a0bd.bin
36b75f4deeb11f9372ce7e77bbfee76401e6e948127dfc2aea74dc514791dbc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0BD 5524 bytes
font_01_sfnt_off0000b355.bin
aceffad837ed18a4d196dd3d2f3ee53e6a16fee40962c8fdc1c014c0628cb897		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB355 9948 bytes

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