PDF malware analysis — malicious · 2d1981179ae7a325

MALICIOUS

PDF

38.7 KB Created: 2020-09-02 00:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 065e711ae7bc1b0895929ea1a45d4a18 SHA-1: dee56ab0b049bc512abd884d57012104458c8ecb SHA-256: 2d1981179ae7a325abc5c2128892571a49557765c4802ce9268adbfbe35c451b

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on static.usrfiles.com. One critical heuristic identified a link to a known malicious redirector at ttraff.ru, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the text 'Incident report form worksafe' and the malicious URL, suggesting a lure to trick users into clicking the malicious link. No scripts were extracted from this sample.

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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/wix?keyword=incident+report+form+worksafe
- https://cdn.shopify.com/s/files/1/0432/6971/8182/files/biological_anthropology_fuentes.pdf
- https://cdn.shopify.com/s/files/1/0440/2718/3269/files/puladotenepujiludatip.pdf
- https://cdn.shopify.com/s/files/1/0432/2187/6900/files/the_dilbert_principle_scott_adams.pdf
- https://static.usrfiles.com/ugd/b80405_f819983ebb434a5e93a290a37e3462f8.pdf
- https://static.usrfiles.com/ugd/b8c837_5def78df6d9a4c24803373e69d6f63c3.pdf
- https://static.usrfiles.com/ugd/b8c837_2022674e470743d2b4a94ddb18289e38.pdf
- https://static.usrfiles.com/ugd/5b604d_c7770e95e5614daca45c8e501070c070.pdf
- https://cdn.shopify.com/s/files/1/0435/5679/8615/files/khadya_suraksha_apil_form.pdf
- https://cdn.shopify.com/s/files/1/0436/2944/5273/files/tutorial_inventor_2020.pdf
- https://cdn.shopify.com/s/files/1/0433/5170/3706/files/81109015940.pdf
- https://cdn.shopify.com/s/files/1/0432/1096/5147/files/forevupe.pdf
- https://static.usrfiles.com/ugd/e2f197_c2096b5efeff475691e0cd3a0491e618.pdf
- https://static.usrfiles.com/ugd/e3c460_f782fc18c5654bf095e48342006ed080.pdf
- https://static.usrfiles.com/ugd/dc98cc_457d34f4e58d4da6ad6424af57fb015c.pdf
- https://static.usrfiles.com/ugd/b8c837_eebae45992ab439ba4e4491924dd2d86.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_off000057cc.bin` `7a3f0d0ac4437b276fd50c2eb23ddcacac61078e2bee6c9226823df6cbbd7930`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x57CC	5364 bytes
`font_01_sfnt_off00006a0b.bin` `d605b3ec19a3914928a742747e206640100c9547c55de800762c24d76a907df7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6A0B	10716 bytes

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