PDF malware analysis — malicious · 27ca33aa92c14f2e

MALICIOUS

PDF

80.6 KB Created: 2021-01-11 19:11:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 1c533e66a7a46fa775e255b870b0c511 SHA-1: 2e7e22f8c141017665570ec93abaf03a54d518ce SHA-256: 27ca33aa92c14f2e3ca11bb41609b0db902a6ca0db706f416fc60356c6c60ac7

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded URLs and heuristics indicate it is malicious, specifically flagged as phishing and a trojan by ClamAV. The document body, though partially corrupted, suggests a lure related to 'British army ranks enlisted'. The primary malicious indicator is the external URI pointing to 'traffking.ru', likely intended to deliver a secondary payload or redirect to a phishing site.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 4

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://traffking.ru/123?utm_term=british+army+ranks+enlisted PDF link annotation
- https://cdn-cms.f-static.net/uploads/4489969/normal_5fe63cc2e3b03.pdfIn PDF document text
- https://site-1174921.mozfiles.com/files/1174921/advertising_campaigns_2020.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/vunizi/wuxobesus.pdfIn PDF document text
- https://s3.amazonaws.com/fisulefajow/dekapiwaruwilolusoju.pdfIn PDF document text
- https://s3.amazonaws.com/pomaxa/implosion_never_lose_hope_for_pc.pdfIn PDF document text
- https://s3.amazonaws.com/tetazino/kagalokipibesofe.pdfIn PDF document text
- https://s3.amazonaws.com/rijaliwiguvex/29232068228.pdfIn PDF document text
- https://s3.amazonaws.com/tidigudetefumof/tigof.pdfIn PDF document text
- https://s3.amazonaws.com/limewub/the_dew_breaker_by_edwidge_danticat.pdfIn PDF document text
- https://s3.amazonaws.com/bifadiwuwileji/ruzobageragifan.pdfIn PDF document text
- https://s3.amazonaws.com/rakabexozu/corrective_action_response_form_template.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ff7d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF7D	5280 bytes
SHA-256: `ebca8cf8fc04ee7c42b1a1d90cfa9cd31ba5f95e63622ad060b5d3b3815a33b8`
`font_01_sfnt_off00011149.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11149	10664 bytes
SHA-256: `6309106312391ac682d22adb0237fedf9253983de0e5a9f052ebeecd6be70366`

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