PDF malware analysis — malicious · 02eade868e324be4

MALICIOUS

PDF

79.8 KB Created: 2021-06-09 10:43:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24

MD5: a7041800101a3defa4814aa5d0bc07c5 SHA-1: 049409172eda31c4beca62fb2acd50422f5b5283 SHA-256: 02eade868e324be4041be553c906d7ee5b6fd6a099d5cc3f49d2cf9edfdfcad9

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to redirect users to malicious content. The presence of a 'free ios keylogger' UTM term in one URL indicates a potential phishing or credential harvesting motive.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

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
PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM

PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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.
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://garglob.ru/uplcv?utm_term=free+ios+keylogger PDF link annotation
- https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/toducqv1nmpsmt71bnmihi8r8s/40916180376.pdfIn PDF document text
- http://wabasnb.com/files/fckeditor/file/193199290260b8a99c565a1.pdfIn PDF document text
- http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff8889f9b8---kogukudojedibewo.pdfIn PDF document text
- https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/n5ujbpn5d97qq59gebls55gih3/55205112737.pdfIn PDF document text
- https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/d58a38c3a86eaf5d2639b4292e3d9a9f/98677628456.pdfIn PDF document text
- https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/e6d8a432873914fe196c90faa8011718/teredutamanupoluxererotut.pdfIn PDF document text
- https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/2c1fb5a7e0be6f7de6cc98c63e89b3b1/14859836471.pdfIn PDF document text
- https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607593224d6d9---xuvalalazetagotada.pdfIn PDF document text
- http://studioagm.it/userfiles/files/56673017988.pdfIn PDF document text
- https://accesoriosalmayor.com/images/userfiles/file/nabebakus.pdfIn PDF document text
- https://spaslask.pl/wp-content/plugins/super-forms/uploads/php/files/ehl675btojj092bv2tp4vnago8/59734195448.pdfIn PDF document text
- http://alexhofford.com/temp/files/file/wagarokezimababanuxerisif.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
- http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/38abed992c2c559129b5f13bc1dc4c83/4936123209.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_off0000f239.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF239	4368 bytes
SHA-256: `abb5a3e858be8b0ed0a99be032a5c65679046ba093830c510ab3bdb0488d4e90`
`font_01_sfnt_off0001011d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1011D	10380 bytes
SHA-256: `fffaa945606e129cf83757987deae57d5af90980b425c4a213cfb57f3fe71579`
`font_02_sfnt_off00012458.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12458	4324 bytes
SHA-256: `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`

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