PDF malware analysis — malicious · 6c9bbe149c8340eb

MALICIOUS

PDF

78.8 KB Created: 2021-03-05 13:17:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16

MD5: 7c1d8887eab97f6b659903c26432434f SHA-1: 0ce6323201bcabe6952f8e457bb3d385c3ed3da8 SHA-256: 6c9bbe149c8340ebcea8a308e9dc6d338d6af9b00cffb58a73b39ff08fde637f

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, contains references to product instructions and search terms, suggesting a lure. The presence of numerous external URIs, many pointing to disposable hosting or link farms, indicates an attempt to redirect users to malicious sites for further exploitation or phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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://jottigo.ru/award?keyword=avent+bottle+sterilizer+instructions+how+much+water PDF link annotation
- http://flymoney.net/lola_lago_detectived3yeb.pdfIn PDF document text
- http://rukawagamijo.iblogger.org/wafixinawufa.pdfIn PDF document text
- http://espaceabonnes.com/sonic_oc_sprite_sheetqkto5.pdfIn PDF document text
- http://gufelujoziwuki.iblogger.org/2_column_cash_book_format.pdfIn PDF document text
- http://technodom11.com/charles_bukowski_quotes_find_what_you_love9s9j2.pdfIn PDF document text
- http://dewobazul.22web.org/aptis_vocabulary_test.pdfIn PDF document text
- http://zujirekirel.22web.org/7064768885.pdfIn PDF document text
- http://nubupexajed.iblogger.org/a_practical_guide_to_evil_novel.pdfIn PDF document text
- http://pearhaidhr.fun/88657758455mob4n.pdfIn PDF document text
- http://nevoburaferivab.22web.org/como_es_una_foto_digitalizada.pdfIn PDF document text
- http://kuzamejeluwezik.22web.org/gimorajozulijugipebemubun.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://uploads.strikinglycdn.com/files/a2490ee6-d81d-4494-a9a8-6f96d8c4305f/vekubivibewut.pdfIn PDF document text
- https://3c1efe6f-6e34-41bb-a2c4-2be85dd3cb33.filesusr.com/ugd/41f880_dc35643bf33a48bd821f97a26de46b6e.pdf?index=trueIn PDF document text
- http://ketoxuxun.epizy.com/lonadepoputabezipepe.pdfIn PDF document text
- https://1c8fadd7-09eb-4d2b-9d42-8e747ba5ce52.filesusr.com/ugd/60625b_a338ce80f0664801997f978d0d9524e0.pdf?index=trueIn PDF document text
- https://fed4949e-3809-4fc0-a28b-84c5d390f589.filesusr.com/ugd/94482e_52438091d8ef4f539680f8bf513efe3e.pdf?index=trueIn PDF document text
- http://madujiketowulat.rf.gd/after_we_collided_book_online.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/39c85a04-4de7-468a-b745-aa38156f19f6/xusekogazivobifakuk.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/03d0b785-39ae-49be-a305-a578535658b0/49719160085.pdfIn PDF document text
- https://5548a280-a194-4776-8019-0e256783c1fa.filesusr.com/ugd/f2c1dc_09616a86ad744524b729ea875925eaa4.pdf?index=trueIn PDF document text
- https://44bb6ee8-a0fe-4f72-890f-0f0a2fec05cf.filesusr.com/ugd/b65acf_86f9be5e4d944cf59f396be92bc783ed.pdf?index=trueIn PDF document text
- http://biwajitakawa.epizy.com/1798613197.pdfIn PDF document text
- http://dawovizi.epizy.com/aao_kabhi_haveli_pe_wallpaper.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_off0000e9cf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE9CF	5252 bytes
SHA-256: `7f9588cb020d5529a3ff8e037199d4b19990bd70bfda462374306b67d105b219`
`font_01_sfnt_off0000fb96.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB96	10332 bytes
SHA-256: `201b845f7980e04e927b43b0c9ae13f7c63dc91e800152fb0d1a02bcd656d96a`
`font_02_sfnt_off00011f00.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11F00	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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