PDF malware analysis — malicious · ac1c48ac118c51ab

MALICIOUS

PDF

40.9 KB Created: 2020-08-20 23:08:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 37b60ffa040e2d030fe1446105a16a0f SHA-1: 2fd5589b60b004f5c2ffa6c7e65411f9524d19ba SHA-256: ac1c48ac118c51ab052ca88a96d76f8bb21ad272f3fb4a17e06759f4a9b524fe

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body and a specific link explicitly mention 'blade full movie free in tamil', suggesting a lure for pirated content. The primary malicious URL, https://ttraff.ru/pify?keyword=blade+full+movie+free++in+tamil, is identified as a redirector, likely leading to further malicious content or malware download. The ML classifier also strongly flagged this PDF as malicious.

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.ru/pify?keyword=blade+full+movie+free++in+tamil
- http://files.calliecolifecoaching.com/uploads/1/3/2/7/132740375/nawafej.pdf
- https://cdn.shopify.com/s/files/1/0434/7016/0032/files/is_11587.pdf
- https://cdn.shopify.com/s/files/1/0429/2732/5343/files/zakuke.pdf
- https://cdn.shopify.com/s/files/1/0433/5442/3464/files/67463799809.pdf
- https://cdn.shopify.com/s/files/1/0427/9622/0572/files/cameraman_gangatho_rambabu_movie_hd.pdf
- https://cdn.shopify.com/s/files/1/0429/5521/0905/files/lumotapase.pdf
- https://cdn.shopify.com/s/files/1/0433/0225/6795/files/nissan_outboard_repair_manual.pdf
- https://cdn.shopify.com/s/files/1/0431/8009/7687/files/71453752361.pdf
- https://cdn.shopify.com/s/files/1/0439/0033/8331/files/wenufolariduxugowijeji.pdf
- https://cdn.shopify.com/s/files/1/0428/2603/9463/files/1977927567.pdf
- https://cdn.shopify.com/s/files/1/0438/4079/8885/files/xarekopizazuwadezi.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_off00006388.bin` `be5f3216247f28679a4854112f5326713c450646c5fe2528b6fcfcdb7a4ebde3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6388	4984 bytes
`font_01_sfnt_off00007469.bin` `ee45bda679cdd8752c2c8557f301d4b7f80ddab089ba93a179fefb9c6ab37408`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7469	10244 bytes

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