PDF malware analysis — malicious · e03125be0413bc49

MALICIOUS

PDF

68.2 KB Created: 2021-01-14 09:00:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-07-15

MD5: 8ac8dcc06491c77a32a02ccb73b6eb20 SHA-1: a24175a8ac2403553b44c33005b96a3e323c7467 SHA-256: e03125be0413bc49408181ab7c9cfc247d328bd3dbe8da45adf195196c831d73

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains numerous external links, a common tactic for SEO poisoning or phishing campaigns. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary malicious URL identified is trafffe.ru, which is likely used to host a phishing page or download a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://trafffe.ru/123?utm_term=og+mandino+the+greatest+salesman+in+the+world+review
- https://tarirubawapub.weebly.com/uploads/1/3/1/6/131606173/9843787.pdf
- https://cdn.sqhk.co/kulizuxekume/kjeahdp/nodabiterenugitusepejiz.pdf
- https://cdn-cms.f-static.net/uploads/4366340/normal_5f91966552577.pdf
- https://femobideja.weebly.com/uploads/1/3/4/7/134735935/1744580.pdf
- https://cdn.sqhk.co/derixosu/Tifohje/movie_quotes_about_love.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/baritexovopa/63267811409.pdf
- https://s3.amazonaws.com/jamokaroxoj/android_studio_tutorial_2018.pdf
- https://s3.amazonaws.com/sasufufa/43225962787.pdf
- https://s3.amazonaws.com/degerutisig/sevier_county_tn_register_of_deeds_office.pdf
- https://s3.amazonaws.com/xijalovelokolep/codedwap_latest_yoruba_movie_2018.pdf
- https://s3.amazonaws.com/jolituzoji/manmadhudu_2_audio_songs_naa_songs.pdf
- https://s3.amazonaws.com/lulelepese/fewanibenarufatopot.pdf
- https://s3.amazonaws.com/ronatiduzoxij/10180848237.pdf
- https://s3.amazonaws.com/muvarelo/sewirefudoselisures.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_off0000cda3.bin` `8da78c3a15852a830d3406c5acbac1fd285dde48a58e3a15884d4315033f1f4e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCDA3	5420 bytes
`font_01_sfnt_off0000dff3.bin` `ed08086bdc090b1a6dd89bdb42017f93da77e04c4c295ae8fb6c0bdaa3ef7af1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDFF3	10432 bytes

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