PDF malware analysis — malicious · f6bc62aafc4deedb

MALICIOUS

PDF

80.0 KB Created: 2021-03-25 08:43:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24

MD5: 5d233045f6701e4713e835772d7ca7b5 SHA-1: 5326cc6a9b501224d7651a5de4b5c38c0c39285b SHA-256: f6bc62aafc4deedb67584929d488094728f1dbaf490028b9fd22acb8fa25fd8d

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 6

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://midufefew.ru/wix?keyword=bob+proctor+11+forgotten+laws+pdf PDF link annotation
- https://bomefojidog.weebly.com/uploads/1/3/2/6/132695402/9012104.pdfIn PDF document text
- https://cdn.sqhk.co/maxegugej/h3ic8Zo/68409550765.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4424982/normal_6005f6006fed8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420760/normal_603a5bcddffad.pdfIn PDF document text
- https://cdn.sqhk.co/jilebodetifa/kghKuLY/fodijilemukasaxigugozizej.pdfIn PDF document text
- https://cdn.sqhk.co/lezubenewago/zc8geCx/xaxiboga.pdfIn PDF document text
- https://guwubujurod.weebly.com/uploads/1/3/1/4/131438509/sibarotadij.pdfIn PDF document text
- https://cdn.sqhk.co/bonosexov/dJidadP/10509926421.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4469374/normal_6022b01e06a11.pdfIn PDF document text
- https://vexepediv.weebly.com/uploads/1/3/4/6/134668456/5772617.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4445890/normal_60413f74375a0.pdfIn PDF document text
- https://cdn.sqhk.co/fugapaloter/cngjcjg/giviwivumipixavazil.pdfIn PDF document text
- https://cdn.sqhk.co/tuvameboroke/fD57ijQ/tabla_jhaptal_bol.pdfIn PDF document text
- https://kigodebilak.weebly.com/uploads/1/3/5/2/135297846/3440055.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://s3.amazonaws.com/kudufigunabi/31811525534.pdfIn PDF document text
- https://s3.amazonaws.com/besafefaf/19954250625.pdfIn PDF document text
- https://006b50d4-ad2a-4261-8279-34542eb0d7b0.filesusr.com/ugd/a640e9_627422b9b90640ab8d89f900e5d078c6.pdf?index=trueIn PDF document text
- https://d6d3a1c5-32ce-46e9-ae92-c5b8d84d65d9.filesusr.com/ugd/a3b54b_a1966f4c654046c0b8c73edc6780c273.pdf?index=trueIn PDF document text
- https://1a9cd40a-f0d6-44d4-a143-19288280ca2b.filesusr.com/ugd/7a13df_eb160360bb8946eb98ba57ff627e303a.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/tejuvonixag/crowd_chatter_sound_effects_free.pdfIn PDF document text
- https://s3.amazonaws.com/sifawekujiki/73335184595.pdfIn PDF document text
- https://s3.amazonaws.com/xubifupi/why_is_the_worm_in_tequila.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000ec8b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEC8B	5396 bytes
SHA-256: `3d05531f4833ef41794b95749fa5afc56a6e5c09f08036a4a9cf3623ec79f970`
`font_01_sfnt_off0000ff01.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF01	10932 bytes
SHA-256: `8fa173e67bb1895d46a2804dded65985452adf9e13637c2d899af6782bbbcc8f`
`font_02_sfnt_off00012454.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12454	4324 bytes
SHA-256: `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`

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