PDF malware analysis — malicious · 73044565949a0e4c

MALICIOUS

PDF

81.0 KB Created: 2021-07-13 19:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)

MD5: dec61d86588a84ca93a8665cb464934e SHA-1: b1a8f46995fd89b985821f109c50b373a839f3ed SHA-256: 73044565949a0e4ccdf50a3baea35b6c91f5dad524c78340a1ca9b59296ac345

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URL pointing to 'crewmak.ru', which is likely used to deliver a malicious payload or conduct phishing. The PDF structure and embedded URI heuristic indicate an attempt to redirect the user to this external resource.

Machine Learning

Nyx PDF Classifier malicious score 0.9906

Heuristics 4

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://crewmak.ru/square?utm_term=new+tamil+mp3+songs+free+download+123musiq+tamil
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ece4ee66c2900cf559c3e5/1626137838232/planting_pansies_from_seed.pdf
- https://static1.squarespace.com/static/60bf6c89a2b0b938881bcf91/t/60ec88f4fe047727940c3870/1626114293233/zifupaxoxibijamoluxetero.pdf
- https://static1.squarespace.com/static/60bf6bff0d8d387fecc8b153/t/60ec786af89f8e700bf65244/1626110058663/what_are_all_the_capitals_of_canada.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed378bc1f2f61945a170f5/1626158987712/48065872857.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60e7708341361c2fc3ff4435/1625780355433/zenipuse.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60e9202e2dabf27235544d64/1625890862560/dplyr_if_else_multiple_conditions.pdf
- https://static1.squarespace.com/static/60aac52a97a1d73ddacfe14c/t/60ec737f8300fd66e1948d9b/1626108799836/american_english_examples.pdf
- https://static1.squarespace.com/static/60aac5994c6b1805bc4acbdb/t/60e8f849e370ac6322873d22/1625880649174/anderson_propane_prices.pdf
- https://static1.squarespace.com/static/60bf69b23f3791685666e32d/t/60ed579afc46f1629a04595b/1626167194716/71529355355.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://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_off0000d828.bin` `2dffa845a288924bf73f03ae5e591971ee82194cb0d7d89aaf902bd02b390ef6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD828	11492 bytes
`font_01_sfnt_off0000f2f5.bin` `d40f221a7c56e7b6ae9b478246c313d572a45f7458a1f729eca49d1996fc292c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2F5	16912 bytes
`font_02_sfnt_off00011f33.bin` `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F33	16792 bytes

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