PDF malware analysis — malicious · 406b0cd0ac57fd42

MALICIOUS

PDF

78.0 KB Created: 2021-02-21 09:50:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 11ce86dd723877967da96770281a9d67 SHA-1: d8a82f42286ac3f4ebe914f01f61b4e46c3d3b5f SHA-256: 406b0cd0ac57fd42103ff8c3fd892bd564b0dfdec00f9196c7ae9d6cf16ce511

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as 'Pdf.Phishing.Trojan'. The PDF contains an embedded URI pointing to a suspicious domain, 'seumenha.ru', which is likely used to host a malicious payload or phishing content. The document body, though heavily obfuscated, suggests a lure related to a poem, which is a common tactic for social engineering.

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://seumenha.ru/123?utm_term=stopping+by+woods+on+a+snowy+evening+rhyme+pattern PDF link annotation
- https://cdn.sqhk.co/wufevinek/PP5hagf/south_park_phone_destroyer_battle_card_game_guardian.pdfIn PDF document text
- https://cdn.sqhk.co/zebapomiz/5sjhfuk/70072374138.pdfIn PDF document text
- https://cdn.sqhk.co/xefilelo/c5icRE4/clean_incense_scent.pdfIn PDF document text
- https://cdn.sqhk.co/kewixoretuze/hfxheKD/38927844340.pdfIn PDF document text
- http://yarrebitteh.online/kemusks3xg.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4452609/normal_5fec732d7eeb6.pdfIn PDF document text
- http://gbarb.me/animal._crossing_new_leaf_coffee_guideeu1qo.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/rogugagatuf/31631211266.pdfIn PDF document text
- https://s3.amazonaws.com/jejulurowev/free_sublease_agreement_template_word_ontario.pdfIn PDF document text
- https://s3.amazonaws.com/zakunafu/leredekimesobatijazegow.pdfIn PDF document text
- https://s3.amazonaws.com/piradi/cisco_nexus_9500_fabric_module_datasheet.pdfIn PDF document text
- https://s3.amazonaws.com/xijilesuzuxo/kizudotuwoxofiwafejupa.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_off0000f343.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF343	5840 bytes
SHA-256: `3d8695630d3eab41bdaad9d5fbe43e6255b624ed5974141b302f0eeee2def8ee`
`font_01_sfnt_off0001070c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1070C	10496 bytes
SHA-256: `96645689c6ed8277771c7dc47ff0061b37ba9c89d7490fa0e6b10c585955c512`

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