Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab749895f62f23dd…

MALICIOUS

PDF

45.2 KB Created: 2020-08-08 23:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d9d610be4e33bc7fbd57203213f5d57 SHA-1: 8980ef5076f54c70425118bb7e50ec71240f4b7b SHA-256: ab749895f62f23dd94fced369ae3a0aa828f7221d91e5fab6947a9b489a69e32
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, also contains the URL for the redirector and several other URLs hosted on Shopify, suggesting a link farm or distribution network. The primary intent appears to be redirecting the user to malicious infrastructure.

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=alignment+test+on+drilling+machine+pdf
    • http://files.sandhillhuntclub.com/uploads/1/3/1/4/131438113/jazinapamofoj_litopozesidimib_zafudojin.pdf
    • http://files.joanndeleau.com/uploads/1/3/0/8/130814110/witogadinabumut.pdf
    • http://files.connectioncounseling.org/uploads/1/3/0/7/130739764/kujigotop.pdf
    • http://files.sandaharrboerboels.com/uploads/1/3/2/6/132681566/6896535.pdf
    • http://files.northeastrandolphpropertyowners.com/uploads/1/3/0/7/130738917/b469a457.pdf
    • https://cdn.shopify.com/s/files/1/0428/6719/6063/files/jimelarilov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefopevepal.pdf
    • https://cdn.shopify.com/s/files/1/0430/4856/6933/files/xorosike.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/26485036577.pdf
    • https://cdn.shopify.com/s/files/1/0438/1101/2770/files/60120050426.pdf
    • https://cdn.shopify.com/s/files/1/0440/8927/8616/files/29867284493.pdf
    • https://cdn.shopify.com/s/files/1/0440/7921/8838/files/windows_7_coem.pdf
    • https://cdn.shopify.com/s/files/1/0437/9007/4016/files/43670144098.pdf
    • https://cdn.shopify.com/s/files/1/0432/9917/6612/files/31235727006.pdf
    • https://cdn.shopify.com/s/files/1/0435/8039/1585/files/58476029924.pdf
    • https://cdn.shopify.com/s/files/1/0449/6615/0303/files/carpal_tunnel_syndrome_physical_therapy.pdf
    • https://cdn.shopify.com/s/files/1/0438/8628/0872/files/99363252474.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8919/files/11603862968.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_off00007148.bin
be7243e9a358dba153d2d456954e3b67c273e6b72746990a26d63ae87eb5b8b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7148 5556 bytes
font_01_sfnt_off00008404.bin
d57e0a3f4159a6b45e51edbe4c9a78db517db1ecdbbdeb53d2f47ff54b1d7ac9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8404 10340 bytes

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