PDF malware analysis — malicious · 1a683b1a1cd49c58

MALICIOUS

PDF

55.3 KB Created: 2020-08-01 03:00:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a05edf55b63781694bcebeeb8f813ee3 SHA-1: b5258332b6324fed975607ec7740195b78fc6230 SHA-256: 1a683b1a1cd49c5899af9e42d4d1c27d29ddda9bcdeec1adf99b87ed7b725aef

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Cookie clicker save codes' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The ML classifier also strongly indicated maliciousness.

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.com/pify?keyword=cookie+clicker+save+codes
- http://files.drjustinsinclair.com/uploads/1/3/1/0/131070051/26634.pdf
- http://files.mysamcooke.com/uploads/1/3/1/6/131606056/fetelo_xosujelavo_lawebo.pdf
- http://files.electricmoonmagazine.com/uploads/1/3/1/3/131383318/512440a80.pdf
- http://files.walkingmerchandise.com/uploads/1/3/1/4/131437513/4085811.pdf
- https://cdn.shopify.com/s/files/1/0433/5206/4155/files/55815361374.pdf
- https://cdn.shopify.com/s/files/1/0434/1111/2092/files/57243384020.pdf
- https://cdn.shopify.com/s/files/1/0430/4571/6129/files/44915330207.pdf
- https://cdn.shopify.com/s/files/1/0429/6078/1465/files/25555130127.pdf
- https://cdn.shopify.com/s/files/1/0434/7900/7398/files/git_pull_override.pdf
- https://cdn.shopify.com/s/files/1/0431/6289/4498/files/41000356116.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17232613021.pdf
- https://cdn.shopify.com/s/files/1/0433/6464/7077/files/sesubep.pdf
- https://cdn.shopify.com/s/files/1/0427/8085/2383/files/74380074265.pdf
- https://cdn.shopify.com/s/files/1/0431/1682/2692/files/tatiwutetoligejimoxabi.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42778981568.pdf
- https://cdn.shopify.com/s/files/1/0430/3133/0969/files/mudepad.pdf
- https://cdn.shopify.com/s/files/1/0431/6246/8503/files/gilikikuni.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000083e3.bin` `272db7d13c046322cd2e1414a75b98afae5f7aedb52e84bdbaa18fa232c02058`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83E3	4684 bytes
`font_01_sfnt_off000093d6.bin` `02e130bf2940151abf59824456aa87bf28ded87050c0d88bd5701e1500622159`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x93D6	14320 bytes
`font_02_sfnt_off0000c1ac.bin` `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC1AC	4324 bytes

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