PDF malware analysis — malicious · d020b7e4e454ee0f

MALICIOUS

PDF

71.2 KB Created: 2021-01-13 17:11:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: f116cad3a1970d9fca5fbab7ec74b8b4 SHA-1: 91b4f9d7b4dd34f0b597a5c50c79946eaa93e63e SHA-256: d020b7e4e454ee0ff3f999b40db4491d84883efb951099ca6a9640a75a42d839

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a lure related to Sentry safe battery replacement instructions. It includes numerous external links, many of which are hosted on mozfiles.com and Amazon S3, suggesting a link farm or distribution mechanism. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
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://traffset.ru/123?utm_term=sentry+safe+battery+replacement+instructions PDF link annotation
- https://site-1083678.mozfiles.com/files/1083678/azamara_quest_ship_plan.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4452608/normal_5fa9e1b5d5dfb.pdfIn PDF document text
- https://site-1171989.mozfiles.com/files/1171989/rainbow_snake_game.pdfIn PDF document text
- https://site-1178049.mozfiles.com/files/1178049/32547245337.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464707/normal_5fc8af3c0abca.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404290/normal_5fb5084966fad.pdfIn PDF document text
- https://kuwepokipeluzil.weebly.com/uploads/1/3/0/9/130969114/rewefuditaber.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387938/normal_5f919cc9b3305.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/rijaliwiguvex/77731103548.pdfIn PDF document text
- https://s3.amazonaws.com/vebogotexaf/bracket_new_song.pdfIn PDF document text
- https://s3.amazonaws.com/bededuxotulapil/practically_speaking_rothwell_free.pdfIn PDF document text
- https://s3.amazonaws.com/leributafa/kofolabiluguboluwukafaruf.pdfIn PDF document text
- https://s3.amazonaws.com/muwemivumazulax/kenwood_middle_school_lakeville_mn.pdfIn PDF document text
- https://s3.amazonaws.com/setigafat/xodinaxijekiwenod.pdfIn PDF document text
- https://s3.amazonaws.com/benubapopikaj/kewoti.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_off0000d934.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD934	5508 bytes
SHA-256: `d395aeb59a1b03c4e41d35fe4f3e18d8ab497b60c55afa39bae44d98659bf460`
`font_01_sfnt_off0000ebe1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEBE1	10360 bytes
SHA-256: `664b5ac0b08ff2de4d84e02573a3e1c5e2dc1cdbcf8a0b1faecd407d80283e7d`

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