PDF malware analysis — malicious · 4a6220cafd050a7f

MALICIOUS

PDF

57.3 KB Created: 2020-08-04 01:12:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 68a9a5fbab1a0ebb85b85bfd6a7405af SHA-1: 217221e8e014ece0e05db232f71d3499436ebbc7 SHA-256: 4a6220cafd050a7ff6eed9b22dc6dfaf9285e62bc855d798d3f782067604f5c9

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains heuristics indicating it is a malicious redirector and part of a link farm, masquerading as an invoice or accounting document. It embeds numerous external links, with a primary malicious URL identified as 'https://ttraff.cc/pify?keyword=bookkeeping+accounting+pdf'. This URL is likely used to redirect the user to a malicious site or download further payloads. The document body, though heavily obfuscated, also contains references to this URL and other PDF links hosted on Shopify and custom domains.

Heuristics 4

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.
Fake invoice / payment lure low SE_INVOICE_LURE

Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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.cc/pify?keyword=bookkeeping+accounting+pdf
- http://files.wearemindmade.com/uploads/1/3/1/4/131437980/bd068bf9.pdf
- http://files.magnumconcretecorp.com/uploads/1/3/1/3/131398036/zadujimozuzegasodon.pdf
- http://files.destyinvestments.com/uploads/1/3/0/8/130813988/2592321.pdf
- https://cdn.shopify.com/s/files/1/0430/5174/5442/files/66466524047.pdf
- https://cdn.shopify.com/s/files/1/0430/9726/0192/files/bavefigig.pdf
- https://cdn.shopify.com/s/files/1/0429/8558/6849/files/bivipatedoka.pdf
- https://cdn.shopify.com/s/files/1/0428/0002/1667/files/gadobilabejufefovu.pdf
- https://cdn.shopify.com/s/files/1/0435/7819/6129/files/filew.pdf
- https://cdn.shopify.com/s/files/1/0430/6957/1233/files/goxuzibegilukabumapexer.pdf
- https://cdn.shopify.com/s/files/1/0431/3228/9175/files/84455334497.pdf
- https://cdn.shopify.com/s/files/1/0431/4539/6386/files/pitadatukoxixokotonemofa.pdf
- https://cdn.shopify.com/s/files/1/0439/8402/7806/files/50111562747.pdf
- https://cdn.shopify.com/s/files/1/0430/0872/1049/files/jiwezebovem.pdf
- https://cdn.shopify.com/s/files/1/0428/5035/3318/files/lotorotimelen.pdf
- https://cdn.shopify.com/s/files/1/0431/5794/6522/files/kojudo.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000a3b3.bin` `86145a3ddc427afcc80c883b4ca63264146aa96983b23a2d8bb62312421e9e35`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA3B3	5128 bytes
`font_01_sfnt_off0000b54d.bin` `7e3f1dc5e5f3d79fda3ed8c6e7b086a111da0a0acadd93515ac73e5b702a97ba`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB54D	10276 bytes

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