PDF malware analysis — malicious · 8b23963ffafda268

MALICIOUS

PDF

66.1 KB Created: 2021-01-04 19:34:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05

MD5: b068e6a08f5020a9bbede273a08e7603 SHA-1: 682916eff767ee38aeadbd5266e4e15bcc931bda SHA-256: 8b23963ffafda26846309459a9e96be6f824cf59097c5ca0d0904aa31d33a39e

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ClamAV as 'Pdf.Phishing.Trojan' and a machine learning classifier indicated a high probability of maliciousness. The document body, though heavily obfuscated, contains text related to 'java indir windows 7', suggesting a lure for software downloads. Several external URIs were extracted, including one pointing to 'trafffe.ru', which are likely used for hosting or distributing malicious payloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 5

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.
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/123?utm_term=gezginler+java+indir+windows+7 PDF link annotation
- https://mufalugibesenu.weebly.com/uploads/1/3/1/4/131453255/56493c3c.pdfIn PDF document text
- https://sotivozorome.weebly.com/uploads/1/3/4/7/134733800/korazesumug_pewazo_togira.pdfIn PDF document text
- https://nasuxixogidipan.weebly.com/uploads/1/3/4/7/134701521/menopaginap_nezigesa.pdfIn PDF document text
- https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/6552296.pdfIn PDF document text
- https://cdn.sqhk.co/zudoputasafe/gdibChb/29681609945.pdfIn PDF document text
- https://tajewarupimef.weebly.com/uploads/1/3/2/6/132681391/riromatiwezab.pdfIn PDF document text
- https://tanaxafim.weebly.com/uploads/1/3/4/5/134501517/vojovufapibelewuma.pdfIn PDF document text
- https://tusujowifavenag.weebly.com/uploads/1/3/1/4/131453847/2838ff0b2138f3a.pdfIn PDF document text
- https://xinogibujijinak.weebly.com/uploads/1/3/4/2/134235465/6d802f87d89.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/0b9c99a6-cbca-4017-b013-75d9a2e9e564/eso_guild_store_pricing.pdfIn PDF document text
- https://s3.amazonaws.com/betimugi/81376706591.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d43ef3ad-f80a-4713-96e2-de1ad7c924a3/westinghouse_digital_firmware.pdfIn PDF document text
- https://s3.amazonaws.com/sukobogixe/xoroxizuziga.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/f816b9be-262c-4cf8-803f-93f9a9f540af/the_b_word_boxycharm.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c2f0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC2F0	5380 bytes
SHA-256: `c1d0beee15f875dd689abb8a3f0bad1036dddb1fda358a8f885dfb60f90dba2f`
`font_01_sfnt_off0000d576.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD576	11700 bytes
SHA-256: `2e71886669a083d78ed09da7fa851fae5ea6518d6dfe6bc37e081d1e5ddb59ea`

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