PDF malware analysis — malicious · c1eccd0a09fa9d53

MALICIOUS

PDF

70.8 KB Created: 2020-11-25 09:07:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 37880abf3f0d79e2b0447bcea9cfce65 SHA-1: d1be5044de0ba4c79edf4b1ab3eb174f5c25fd41 SHA-256: c1eccd0a09fa9d5394627fa58a6cb8f36a52c3e2cea52da93d076fadd4d3a603

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, with one prominent URL leading to a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The document body, though heavily obfuscated, suggests a lure related to educational materials.

Machine Learning

Nyx PDF Classifier malicious score 0.9966

Heuristics 5

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
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://trafffi.ru/123?utm_term=english+2+unit+6+vocabulary+packet+answers
- https://cdn-cms.f-static.net/uploads/4418365/normal_5fa5601c4c2a9.pdf
- https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/1061597.pdf
- https://xelabuxu.weebly.com/uploads/1/3/4/2/134235382/bab1751f.pdf
- https://cdn-cms.f-static.net/uploads/4369775/normal_5fb42b41dc851.pdf
- https://cdn-cms.f-static.net/uploads/4387240/normal_5f98e8794b484.pdf
- https://cdn-cms.f-static.net/uploads/4413363/normal_5fb8a9f9112bb.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/xakapudakadu/jeppesen_fd_pro_x_user_guide.pdf
- https://uploads.strikinglycdn.com/files/3a353be2-e877-4e62-a8b9-a0c2357f217e/xejes.pdf
- https://uploads.strikinglycdn.com/files/d68fcdb0-3c54-49f3-b044-b0d27c2e059b/poptropica_unblocked_games_at_school.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
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c10a.bin` `4dd17532556957e9afd8f40514775d8bbb30210131a440ea88171ece7e54e00b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC10A	5896 bytes
`font_01_sfnt_off0000d537.bin` `9c88bc3a0b930f3483e9062f3c73eed8ef05cb69b32784f8b1335bcb91d23bfa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD537	10348 bytes
`font_02_sfnt_off0000f8c8.bin` `f6e0f4a25f18a144688c6b7f40519a5efc98c72643b9054f89526e396d9b459d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8C8	16144 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.