PDF malware analysis — malicious · 41b7dc4eed0497af

MALICIOUS

PDF

40.3 KB Created: 2020-09-03 11:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1e36e8be2eed3d4ce030fb691f79b026 SHA-1: 25c87ba721925f1b1836a45827edd9be2715faa3 SHA-256: 41b7dc4eed0497afb5cd84c598823aaeb3cab810eaaa9ddff3228e4792c02076

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL, https://ttraff.com/wix?keyword=d%2526+g+shoes+size+guide, is the primary indicator of compromise, suggesting a phishing or malware distribution attempt.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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/wix?keyword=d%2526+g+shoes+size+guide
- https://cdn.shopify.com/s/files/1/0434/7219/1641/files/8324459372.pdf
- https://cdn.shopify.com/s/files/1/0434/5511/9520/files/wamobirale.pdf
- https://cdn.shopify.com/s/files/1/0432/2630/0575/files/80469770294.pdf
- https://static.usrfiles.com/ugd/436160_a0b636247ff84ab683a5c49a46ce7009.pdf
- https://static.usrfiles.com/ugd/b4609a_81d44c4c10964c2cbf2b84986cfcba0d.pdf
- https://static.usrfiles.com/ugd/4ae4db_e25990e139814331a3562f5a376983d9.pdf
- https://static.usrfiles.com/ugd/529dbf_6379fa81fddb43a0b1e004347800a1f1.pdf
- https://static.usrfiles.com/ugd/b916f4_96e27241608b4d549272b2cb5a758fb9.pdf
- https://cdn.shopify.com/s/files/1/0429/0668/1497/files/34889659182.pdf
- https://cdn.shopify.com/s/files/1/0430/6770/3457/files/suzenupubuwavubininopi.pdf
- https://cdn.shopify.com/s/files/1/0430/7540/3929/files/49139071681.pdf
- https://cdn.shopify.com/s/files/1/0437/1664/0917/files/tekejevuk.pdf
- https://cdn.shopify.com/s/files/1/0434/0865/4492/files/construct_a_cladogram_worksheet_answers.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_off0000612a.bin` `4137e011fb50e940388b7a91a31e36f70741d8ce55ef6fbc7fb0314564e06879`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x612A	4156 bytes
`font_01_sfnt_off00006f5a.bin` `3a741367944441c539e4eb138b8b059bba8ab6747a2b444af64bcf008a87fa7e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F5A	11108 bytes

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