PDF malware analysis — malicious · df9875024db10550

MALICIOUS

PDF

40.6 KB Created: 2020-08-09 05:27:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b5a859c3de5c18e7682fb8ddf7380283 SHA-1: 187bb66f66f481b70257d2c7491fe0906c5ee17a SHA-256: df9875024db10550da23f39642d47f5906999cb8cb5767cd083c5411e7bb0ce5

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. This redirector, 'ttraff.cc', is likely used to obscure the final destination, which could be a phishing page or a site distributing further malware. The presence of a large number of external PDF links also suggests a link farm or SEO poisoning tactic to increase visibility.

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=variable+costing+vs+absorption+costing+pdf
- http://files.loganreagan.com/uploads/1/3/0/7/130739860/6d64ad7ae.pdf
- http://files.symbolicartcenter.com/uploads/1/3/1/4/131453241/pikazipeg-fixisupenefomiz.pdf
- http://files.reddeeraircadets.com/uploads/1/3/1/8/131857305/3155b6bd228498.pdf
- http://files.travelwithgracegetaways.com/uploads/1/3/1/4/131406800/texelasigidoxitidal.pdf
- http://files.simplysweetshopnola.com/uploads/1/3/1/8/131859261/lelapaledesatib.pdf
- https://cdn.shopify.com/s/files/1/0429/7719/8229/files/ranomojokugin.pdf
- https://cdn.shopify.com/s/files/1/0451/3293/9429/files/active_voice_passive_voice_in_urdu.pdf
- https://cdn.shopify.com/s/files/1/0428/2286/0966/files/85879651006.pdf
- https://cdn.shopify.com/s/files/1/0433/7985/1414/files/zugofovipavijemi.pdf
- https://cdn.shopify.com/s/files/1/0430/9814/4932/files/kuzilabitumisizerelewi.pdf
- https://cdn.shopify.com/s/files/1/0431/5080/3099/files/wijikoz.pdf
- https://cdn.shopify.com/s/files/1/0429/8522/6403/files/mathematics_in_the_modern_world_book_philippine_edition.pdf
- https://cdn.shopify.com/s/files/1/0434/9073/8328/files/rabikerugazipufebu.pdf
- https://cdn.shopify.com/s/files/1/0432/5670/9273/files/72117054882.pdf
- https://cdn.shopify.com/s/files/1/0430/9745/6801/files/lewufiw.pdf
- https://cdn.shopify.com/s/files/1/0434/6360/6429/files/blood_type_ab_positive_diet.pdf
- https://cdn.shopify.com/s/files/1/0433/5376/8095/files/kagepamolaxubefafuturopa.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_off00005f80.bin` `e6e04825350742d0e10e271bdd60d1b1ce88445c6e693639176213b0f042de75`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F80	5488 bytes
`font_01_sfnt_off0000723e.bin` `8cfc0ae7849c7331810d9fbe861db5594513b5c12614eb76aa09862146937a70`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x723E	10228 bytes

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