PDF malware analysis — malicious · 7f9ba538e10c0522

MALICIOUS

PDF

49.6 KB Created: 2020-11-14 00:11:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fc3c39c0115b809f2d1a2816eca0ccb7 SHA-1: 47ce629600d0db537c73c6e9823ec78b1222df20 SHA-256: 7f9ba538e10c0522a464054f7245098e36ee70bcbede29208b07690f06721a66

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a critical heuristic identifying it as a link farm. One prominent URL, 'https://traffking.ru/aws?utm_term=microstrategy+attribute+form+html+tag', suggests a lure related to Microstrategy attributes. The ClamAV detection and ML classifier further indicate malicious intent, likely for phishing or distributing further malware via the linked PDFs.

Machine Learning

Nyx PDF Classifier malicious score 0.9386

Heuristics 4

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.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
External URI info PDF_URI

PDF contains an external URL action
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://traffking.ru/aws?utm_term=microstrategy+attribute+form+html+tag
- https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/3cb113af6.pdf
- https://borusolu.weebly.com/uploads/1/3/4/3/134327960/690c1496a.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/levumoduf/1219578597.pdf
- https://s3.amazonaws.com/jufowokedunod/nuzolop.pdf
- https://s3.amazonaws.com/joterige/8100275351.pdf
- https://s3.amazonaws.com/jenagubadopi/words_with_esia.pdf
- https://s3.amazonaws.com/punurum/72095406215.pdf
- https://s3.amazonaws.com/vexeliku/64273806915.pdf
- https://s3.amazonaws.com/tobojelusiwi/direct_and_indirect_speech_worksheet_grade_6.pdf
- https://s3.amazonaws.com/kovilowab/12_cube_storage_unit_ikea.pdf
- https://s3.amazonaws.com/felasorarabipis/greenworks_21142_string_trimmer.pdf
- https://uploads.strikinglycdn.com/files/66fc1f29-0502-4a12-953b-e7b71101e588/bugoxadol.pdf
- https://s3.amazonaws.com/gopuze/vukiludagu.pdf
- http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000af83.bin` `06ad453401366a75ad855b17c8ed172c02fd54d7515278ebd229d933b1720299`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAF83	5316 bytes

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