PDF malware analysis — malicious · 424bb63c01b22135

MALICIOUS

PDF

86.9 KB Created: 2020-12-25 16:27:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 65a430935291754c18704c75a792b6e1 SHA-1: ba7ee56d0f348471851dd4244102c34115080fe9 SHA-256: 424bb63c01b221358864076dbe651bc044e1e8a1654be2cd53887fa912fb43a9

206 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, many hosted on disposable domains, characteristic of a link farm or phishing campaign. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body, though heavily obfuscated, appears to be a lure related to 'gallery furniture nyc manhattan'.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 7

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.
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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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://trafffe.ru/strik?utm_term=gallery+furniture+nyc+manhattan PDF link annotation
- https://cdn.sqhk.co/vizinifum/bWxqLhe/bewiponiriton.pdfIn PDF document text
- https://vagipirisixo.weebly.com/uploads/1/3/4/8/134861957/sabawetej.pdfIn PDF document text
- https://jisiresofuwidi.weebly.com/uploads/1/3/0/7/130739297/kekozivaguxakud-gikulikomad.pdfIn PDF document text
- https://mubatizusilaboj.weebly.com/uploads/1/3/4/4/134475350/00301b31a1a6.pdfIn PDF document text
- https://seporulakokifo.weebly.com/uploads/1/3/4/5/134590723/kitukopixonuzov.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379474/normal_5f9ea8f4112b3.pdfIn PDF document text
- https://cdn.sqhk.co/kapidibewomu/hfigdjj/bejuvezatajejewotasani.pdfIn PDF document text
- https://vidajubobulixi.weebly.com/uploads/1/3/4/6/134650234/d200f668914f67.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4448539/normal_5fd1700e3b730.pdfIn PDF document text
- https://saxeguwub.weebly.com/uploads/1/3/1/4/131406831/pibopikokefapo.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/b460113f-6363-45b9-9548-1a0777804bdd/app_that_you_can_download_movies.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b0bd1b5a-5943-4da5-a3b9-0eb71cd410da/41674728952.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7857ac1c-8d86-4d86-ad0e-056b53960575/gary_coleman_grill_mp3_player.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7986737b-5fa8-4354-9822-32f2ae858873/5514836462.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000101fa.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x101FA	5076 bytes
SHA-256: `f38fb2d3a5066a651567044950b5b50c8e8c254f68e744ca32136e55d642d53e`
`font_01_sfnt_off00011324.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11324	11384 bytes
SHA-256: `8b6069dad157975168da2fcbf05a1e603e8edec338630be2478ae5596f7e085d`
`font_02_sfnt_off00013965.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13965	16168 bytes
SHA-256: `bcfecb9fde4b74e4a2b692e15caf305b2988a1cfe4c6386614002e38d35feb86`

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