Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab825356cc69fa49…

MALICIOUS

PDF

69.2 KB Created: 2020-08-11 05:56:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52e93a34ce7a1bd8d578c37b51715ab1 SHA-1: 062cd7fb7d2e8f7bf36673c8cd74c31fadb31f9b SHA-256: ab825356cc69fa493de7ea19561ff1ff71128748d65d18c9e487276e14417615
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://ttraff.com/wb?keyword=financial%20risk%20management%20pdf%20drive', is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains this URL, suggesting a lure to a malicious site disguised as a financial document. The PDF also contains a large number of external links, characteristic of SEO spam or link farms, further supporting a malicious redirection scheme.

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/wb?keyword=financial%20risk%20management%20pdf%20drive
    • http://files.ancestorsinmyattic.com/uploads/1/3/1/3/131383648/6672627.pdf
    • http://mafokino.purplemegreen.com/uploads/1/3/0/8/130814297/verapuniladosupobun.pdf
    • http://files.dannyanthonywritings.com/uploads/1/3/2/7/132740291/duwevekimizak-lomizinijujaguk.pdf
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/83023233473.pdf
    • https://cdn.shopify.com/s/files/1/0429/4580/6503/files/65558471531.pdf
    • https://cdn.shopify.com/s/files/1/0434/6331/1512/files/koxidusu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5649/5783/files/62159835193.pdf
    • https://cdn.shopify.com/s/files/1/0428/8164/6758/files/80250222454.pdf
    • https://cdn.shopify.com/s/files/1/0433/5822/4549/files/jigefugadadede.pdf
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/57649046510.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/lonositidof.pdf
    • https://cdn.shopify.com/s/files/1/0431/3707/3314/files/rectifier_definition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69651331918.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29529942485.pdf
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/afro_asian_literature.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_off0000d13f.bin
ee1c6c859893d5c7d6b6db21d7d7ed7604b346c9a9cfe60fb63ce2670af9d8a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD13F 5556 bytes
font_01_sfnt_off0000e414.bin
d4af101db51569f8e5a95a9014e0a271965c417acec5b11d3937e25d5cc1cc6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE414 10500 bytes

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