PDF malware analysis — malicious · 3274e1ee1ef8cab3

MALICIOUS

PDF

43.7 KB Created: 2020-08-09 05:33:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a77e8f79e1fe3a538f94c32e07ac4282 SHA-1: 60bac9eb78a765441ec6592f89ffd75423861fea SHA-256: 3274e1ee1ef8cab30ede040e075722c5df7ecf980ff12590757406743cd998e4

150 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, many pointing to a redirector service (ttraff.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains the URL https://ttraff.cc/pify?keyword=salesforce+lightning+components+tutorial+pdf, suggesting a lure to a malicious site disguised as a tutorial. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly indicate malicious intent through link manipulation.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=salesforce+lightning+components+tutorial+pdf
- http://files.assortedartistries.net/uploads/1/3/1/0/131070309/1042651.pdf
- http://files.frankstownwoodfiredpizza.com/uploads/1/3/1/6/131606492/2796c.pdf
- http://files.borsodifinejewellery.com.au/uploads/1/3/2/6/132682787/vetusitipukanifi.pdf
- http://files.celestejohnsonlpc.com/uploads/1/3/1/4/131407709/6620720.pdf
- http://files.trinitybergenlutheranchurch.org/uploads/1/3/1/3/131379320/7210037.pdf
- https://cdn.shopify.com/s/files/1/0431/6974/2999/files/13384919373.pdf
- https://cdn.shopify.com/s/files/1/0433/1021/9422/files/vufutubujuzijefu.pdf
- https://cdn.shopify.com/s/files/1/0429/2273/7830/files/wudalexaj.pdf
- https://cdn.shopify.com/s/files/1/0432/9812/8036/files/xoxitewasenuvuzomej.pdf
- https://cdn.shopify.com/s/files/1/0435/7554/1919/files/minerals_identification_lab.pdf
- https://cdn.shopify.com/s/files/1/0435/0138/7936/files/42994990203.pdf
- https://cdn.shopify.com/s/files/1/0431/6856/3355/files/nedadezivarepu.pdf
- https://cdn.shopify.com/s/files/1/0435/7016/7967/files/cricut_explore_air_2_manual.pdf
- https://cdn.shopify.com/s/files/1/0434/6858/7174/files/var_www_permissions.pdf
- https://cdn.shopify.com/s/files/1/0433/7205/2643/files/concept_of_vocational_guidance.pdf
- https://cdn.shopify.com/s/files/1/0432/5857/7064/files/acknowledgment_of_paternity_texas.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_off000062c8.bin` `20e4fa0e1891f98a241a9078928b194899b4d72333547d20f27028deb248eeb1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62C8	5672 bytes
`font_01_sfnt_off000075e1.bin` `9587a97138f76f3f4b575977e3a3d1db49fcc9dae5c1bc90938bcd664dd14fd9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x75E1	14240 bytes

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