PDF malware analysis — malicious · fc4e183e83ce5021

MALICIOUS

PDF

82.9 KB Created: 2021-03-19 16:18:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20

MD5: acd53f629569a9a4894f0071c888d205 SHA-1: a26209c8bdfaa22f4662f107953c7675d4bbd192 SHA-256: fc4e183e83ce502107ee78725b45d1e697c4d29c01c1bd9b44646e85294f93ce

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded URLs and is flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. The document body, though heavily obfuscated, appears to contain text related to turkey smoking, likely as a lure to direct users to the malicious URL. The presence of external URIs and the link farm heuristic suggest a phishing or redirection attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/strik?utm_term=how+long+do+you+smoke+a+turkey+on+the+big+green+egg PDF link annotation
- https://cdn.sqhk.co/vixawutozama/FZEhfgf/pandemic_war_room_parler.pdfIn PDF document text
- https://cdn.sqhk.co/wotezowedo/gf6hahi/inside_the_criminal_mind_imdb_parents_guide.pdfIn PDF document text
- http://fizarumokugafu.mywebcommunity.org/nazijuzepemigugixolojo.pdfIn PDF document text
- http://jabewes.medianewsonline.com/82803338014.pdfIn PDF document text
- http://riwozizedilar.mygamesonline.org/61923868756.pdfIn PDF document text
- https://cdn.sqhk.co/gobuwovuv/gdkhhjd/jifaliza.pdfIn PDF document text
- https://cdn.sqhk.co/lebereme/hjhicge/jogorogezezukami.pdfIn PDF document text
- https://nupipopefere.weebly.com/uploads/1/3/4/5/134509985/vatugovugidopumidov.pdfIn PDF document text
- https://cdn.sqhk.co/poxofufiko/a5hiDHQ/ajooba_song_ringtone.pdfIn PDF document text
- https://rawekawus.weebly.com/uploads/1/3/4/4/134467784/36506599.pdfIn PDF document text
- https://jupuwova.weebly.com/uploads/1/3/1/4/131409597/xojajew-wuwumo-kamuliwe-melivugaxu.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://s3.amazonaws.com/gifiz/56396052012.pdfIn PDF document text
- https://724418e0-3ace-43c1-abd8-628b4820fc71.filesusr.com/ugd/6df952_9f162d5ed14d4c79ac0b1e0431a473c5.pdf?index=trueIn PDF document text
- http://gozenabuzixi.onlinewebshop.net/what_does_waldo_mean.pdfIn PDF document text
- https://s3.amazonaws.com/jepavilutabilel/simile_and_metaphor_worksheet_grade_5.pdfIn PDF document text
- https://s3.amazonaws.com/farefasejikap/31665801155.pdfIn PDF document text
- https://14535e1a-360a-4d01-a655-fa33e115c80e.filesusr.com/ugd/b222ea_32be57ae0f3741cea083f7f870bd0c00.pdf?index=trueIn PDF document text
- https://64f1e6a9-4530-4009-9f9b-67b91dd69f79.filesusr.com/ugd/76b6de_68c47a2483d44bff9b0a1c515542ab38.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/davolazupivowi/51413881171.pdfIn PDF document text
- https://8f1c0ae7-1ba6-4c51-a623-4d29f5e3aebb.filesusr.com/ugd/c1615c_3dfcd27a16ce4e1994396c9a8c767a20.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kovezux/how_long_is_the_bed_in_a_ford_ranger.pdfIn PDF document text
- https://9c789f27-b70c-4c9d-9e83-211ee8f99b38.filesusr.com/ugd/bdeb4c_9544d75f1cee43208153711d69833002.pdf?index=trueIn PDF document text
- http://wulibazosuxib.onlinewebshop.net/93859722585.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_off0000f53a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF53A	5480 bytes
SHA-256: `4e60d012cc94032eb228c92bcd2478bfa7b0e624e5cd0ef7263e571c5b3c1fc9`
`font_01_sfnt_off000107bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x107BB	11148 bytes
SHA-256: `f20c9f77accdd27e86fea407619c0fe09f44852b14a2db4d7a50e89ec9d76782`
`font_02_sfnt_off00012db9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12DB9	4324 bytes
SHA-256: `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`

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