PDF malware analysis — malicious · ce4c10e49fd339aa

MALICIOUS

PDF

81.0 KB Created: 2021-03-19 07:21:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: 2b8395d8167eb40aca07dd89fabac515 SHA-1: cfed95ad314a55d1baf7c13e0331063f870743a2 SHA-256: ce4c10e49fd339aa16cbf322a0287a20583ca30448325d5f2f2e88d21ed4fe19

196 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file exhibits characteristics of a phishing lure, specifically designed to attract users searching for 'gears pop mod apk unlimited money'. It contains a large number of external links, many pointing to PDF files hosted on various domains, suggesting a link farm or redirector strategy. The presence of a PDF_SEO_LINK_FARM heuristic firing indicates a deliberate attempt to create a network of linked content, likely for SEO manipulation or to distribute malicious payloads disguised as legitimate downloads. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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 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.
Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK

PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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://zajinet.ru/wix?keyword=gears+pop+mod+apk+unlimited+money PDF link annotation
- http://jorowijedo.mywebcommunity.org/mezogagipubejutezojo.pdfIn PDF document text
- https://bepopasexib.weebly.com/uploads/1/3/4/3/134356469/nuzasezitabas.pdfIn PDF document text
- http://punavuvipufov.sportsontheweb.net/voparijava.pdfIn PDF document text
- https://dumugukof.weebly.com/uploads/1/3/4/6/134647937/7037ea97b4d.pdfIn PDF document text
- https://redobalopubijav.weebly.com/uploads/1/3/1/3/131380120/d95db4.pdfIn PDF document text
- https://cdn.sqhk.co/gujamozulas/GyUnQhc/pefubenobolinuza.pdfIn PDF document text
- https://wifonofiwi.weebly.com/uploads/1/3/4/6/134636358/xibojeri.pdfIn PDF document text
- http://lojapidabud.mypressonline.com/93324278185.pdfIn PDF document text
- https://cdn.sqhk.co/zapiseniw/jjihMie/corn_maze_iowa_haunted.pdfIn PDF document text
- https://mafalipakirufez.weebly.com/uploads/1/3/5/3/135347960/3420006.pdfIn PDF document text
- http://sewukagazub.mypressonline.com/42287577579.pdfIn PDF document text
- https://zidujakokogaj.weebly.com/uploads/1/3/4/8/134892028/sewapukatikomix.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/8ce867ea-44dc-4f75-af63-464db24d1a35/80129131507.pdfIn PDF document text
- https://s3.amazonaws.com/vebogotexaf/vibrate_when_call_is_answered_samsung_a20.pdfIn PDF document text
- https://s3.amazonaws.com/dosipive/car_games_qawwali.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/89c3c27a-06ff-44ae-99cf-c4ebe0181bb0/46970476988.pdfIn PDF document text
- https://s3.amazonaws.com/jirebonudur/simplifying_and_multiplying_radicals_worksheet_answers.pdfIn PDF document text
- https://s3.amazonaws.com/fatikonavori/printable_emoji_faces_templates.pdfIn PDF document text
- https://s3.amazonaws.com/kavalukato/todobas.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_off0000f0c1.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF0C1	5300 bytes
SHA-256: `5883e678d8b9c7451abf4bd731f3ef6f618855f7620fa95af4e60671b2297e22`
`font_01_sfnt_off000102ba.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x102BA	2744 bytes
SHA-256: `99ca08574c0f61703d69c95e98248c5d024aef0632fe13605c1c1e389329cf25`
`font_02_sfnt_off00010e64.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10E64	11640 bytes
SHA-256: `adefd73611538c64763903cd9cd4bac2e36e76bc381adfa55350a4626029c4e5`

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