PDF malware analysis — malicious · 04473eedf7837b7e

MALICIOUS

PDF

77.7 KB Created: 2021-03-24 01:59:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13

MD5: 4eb83279429c2a4efaf912743574aa21 SHA-1: cd91111294455b9fe91415f240f5413a0009f39f SHA-256: 04473eedf7837b7eacc5590a545fa698a0751c7bd34ef6f957c06ba778c78f27

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as a link farm, containing a large number of external URLs pointing to disposable hosting. The ML classifier and ClamAV also identified it as malicious, specifically as a phishing or trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially malicious sites, possibly for SEO manipulation or to host further payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
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://bologen.ru/wix?keyword=wakfu+sacrier+guide+2019 PDF link annotation
- https://guvavibigedufos.weebly.com/uploads/1/3/4/8/134855984/memik-bifibere-rolixafiwawi.pdfIn PDF document text
- https://femanutokit.weebly.com/uploads/1/3/3/9/133999532/juxevagiwojojitodixo.pdfIn PDF document text
- https://jolewewovu.weebly.com/uploads/1/3/6/0/136087062/sajaf-notasamevarev-vuneni-zivuti.pdfIn PDF document text
- https://kavekoda.weebly.com/uploads/1/3/5/3/135326791/6622648.pdfIn PDF document text
- https://dafalozurevibi.weebly.com/uploads/1/3/4/3/134308304/f3a493.pdfIn PDF document text
- https://namewedopuso.weebly.com/uploads/1/3/4/5/134583017/5613145.pdfIn PDF document text
- http://reznitskygallery.com/82332324750fvhex.pdfIn PDF document text
- http://allerop.xyz/decimal_number_line_worksheet_year_5cf8b2.pdfIn PDF document text
- http://50offstore.info/baa_nalle_madhuchandrake_kannada_movie_freemrd4l.pdfIn PDF document text
- http://moneyindia.site/walokorijazametarixba40z.pdfIn PDF document text
- https://tibagikusutugox.weebly.com/uploads/1/3/0/7/130775046/kexomunono.pdfIn PDF document text
- https://xotozefubineru.weebly.com/uploads/1/3/4/5/134576546/953877.pdfIn PDF document text
- https://reratuzofi.weebly.com/uploads/1/3/5/3/135346135/fd0a7f763f2.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://30383b9b-b26a-44f4-9a26-03873af8f03c.filesusr.com/ugd/fdee49_acf3d480fe014ab3864fbb6f04848a99.pdf?index=trueIn PDF document text
- https://d64d5b41-a66a-4b78-b87f-0feaf8e9cf76.filesusr.com/ugd/cf1aed_fc3a498b5cc14a24870f57385eac4e3f.pdf?index=trueIn PDF document text
- https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_8e84367c8b2d4519bb9152db7eff4194.pdf?index=trueIn PDF document text
- http://pobetij.epizy.com/what_is_an_approved_garage.pdfIn PDF document text
- https://e1bd05e7-a2ed-43df-b5fc-9bc8ee0b1a84.filesusr.com/ugd/08acf3_8de3c9149b26477b9de3425fa8df75d9.pdf?index=trueIn PDF document text
- http://megepivafigu.rf.gd/utp_cable_types.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_off0000e3a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE3A3	5304 bytes
SHA-256: `d0ffe3f810c2bf1f52869c1e0e2e96d77662b37ab6a0293110941addd2f2e672`
`font_01_sfnt_off0000f5c9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF5C9	11316 bytes
SHA-256: `e176ee6a3d0c2e03dc06350ee6bd0834031cdcf3068da694a26700cfc4568ad9`
`font_02_sfnt_off00011bdf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11BDF	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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