Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bedc5ff2bf0806…

MALICIOUS

PDF

37.1 KB Created: 2020-08-02 19:53:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cde1e68b31c7b9adc41525b076cb271 SHA-1: f0eac04591b6c86ea2e2a634457342d1fb0e5e84 SHA-256: 27bedc5ff2bf0806c580114b9b48314b6096c87486c4d5dc10233c13f10c4a3f
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical link to a known malicious redirector at 'https://ttraff.com/pify?keyword=carrier+air+v'. This indicates the document is likely a lure to redirect users to malicious sites, potentially for phishing or malware downloads. The document body text is heavily corrupted, but the presence of the URL in the body and the heuristic firings strongly suggest this malicious intent.

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=carrier+air+v
    • http://files.queenannebaptist.org/uploads/1/3/0/7/130740442/resanab.pdf
    • http://files.connieherbergfineart.com/uploads/1/3/1/3/131380767/petej_pinuriw_zejukokuk.pdf
    • http://files.meaningfulmovementproject.com/uploads/1/3/1/1/131164555/goxoxufilodo_roredegubilur_penitosivesujab.pdf
    • http://files.ursulawestwood.com/uploads/1/3/1/6/131606115/d8156b95328.pdf
    • http://files.sagensparrow.com/uploads/1/3/1/4/131455337/lirizaxipufuzaki.pdf
    • https://cdn.shopify.com/s/files/1/0432/2682/4859/files/gezibotagukuvijafer.pdf
    • https://cdn.shopify.com/s/files/1/0428/4963/2415/files/ratudatisivofiri.pdf
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/78765161171.pdf
    • https://cdn.shopify.com/s/files/1/0433/3859/6511/files/8012403104.pdf
    • https://cdn.shopify.com/s/files/1/0428/8941/2767/files/22605773501.pdf
    • https://cdn.shopify.com/s/files/1/0438/4551/7469/files/45529850138.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/gejixodevogimifuli.pdf
    • https://cdn.shopify.com/s/files/1/0429/6232/1571/files/31239515745.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/laxefasigapabaxirasu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9544/8988/files/ps2_emulator_android_2017.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63545483179.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_off000055fb.bin
b6a0f5c39919bbfdb0d2ab8f4657663dcbec4df950e2f20939648bc956630176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55FB 4436 bytes
font_01_sfnt_off0000651a.bin
3c6f4e87fd5b292cf5b7e89caaa1d77838f48362389252387c1b8ddf3d5d4b4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x651A 10252 bytes

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