PDF malware analysis — malicious · 6bff0825bb69d8ac

MALICIOUS

PDF

52.0 KB Created: 2020-08-27 23:37:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: df639ac9f3356e936f68e4f10f288dce SHA-1: 88056bcabd8a824524658644bf7243f6c18dfb22 SHA-256: 6bff0825bb69d8ac2ddad59d1700376c1f75ed9e12fe8498d064a785c274cbe2

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by an ML classifier and contains a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for users interested in 'body measurement tracking'. The presence of multiple external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content.

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.cc/pify?keyword=body+measurement+tracking+chart
- http://zovegox.megaworldatmakati.com/uploads/1/3/1/4/131453453/dakitagod.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0434/0747/4844/files/forodilafewifas.pdf
- https://cdn.shopify.com/s/files/1/0439/1282/2939/files/minecraft_bedrock_item_ids.pdf
- https://cdn.shopify.com/s/files/1/0429/9282/8579/files/jivewewamekebamavuwojerog.pdf
- https://cdn.shopify.com/s/files/1/0430/7674/7413/files/coaching_ontologico_ejercicios.pdf
- https://cdn.shopify.com/s/files/1/0432/0477/2000/files/42885507613.pdf
- https://cdn.shopify.com/s/files/1/0433/5150/7112/files/archaeology_of_knowledge.pdf
- https://cdn.shopify.com/s/files/1/0439/3949/6094/files/aiou_solved_assignment_autumn_2020_free_download.pdf
- https://cdn.shopify.com/s/files/1/0429/6146/9596/files/walerovememewedaj.pdf
- https://cdn.shopify.com/s/files/1/0462/5937/2183/files/xozirizaxovakiliwow.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00008c99.bin` `b2eac88953f8104c37268e63b0b71a8e6d12ae3e58b6e16ab991a00c343abe26`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C99	5536 bytes
`font_01_sfnt_off00009f45.bin` `a36ada294710a462a157c9d48ae98d176e8938815946f6526d16540407a2611b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9F45	10512 bytes

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