PDF malware analysis — malicious · e0db919902b18a6c

MALICIOUS

PDF

87.1 KB Created: 2021-03-23 19:32:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: c9ace3da124ae65a438631a0fd0cd3dc SHA-1: de6adc57ace1c81a6dfacbe11a0b44ab9c5f4c63 SHA-256: e0db919902b18a6c15b48de1ae4be247536f2964300425f96459cfdb0083f205

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing and malware distribution. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic specifically flags this behavior, indicating an attempt to lure users to download malicious content. The ML classifier and ClamAV detection strongly support the malicious nature of this file.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://nipisod.ru/aws?utm_term=canoscan+lide+220+mac+os+catalina PDF link annotation
- http://kvyovk.xyz/how_to_pass_nc_cdl_testf7mg7.pdfIn PDF document text
- http://fb-pageunderreview.com/xokivemawwce0x.pdfIn PDF document text
- https://cdn.sqhk.co/tezofugowura/jf3Hid9/nabexanizaviduzujipudur.pdfIn PDF document text
- http://jofijuke.22web.org/11684923353.pdfIn PDF document text
- https://korumarivaz.weebly.com/uploads/1/3/4/5/134506991/7521758.pdfIn PDF document text
- http://shoop-ff.ru/79241682275zpcbc.pdfIn PDF document text
- https://guxumexowe.weebly.com/uploads/1/3/3/9/133999944/zamodit-lukuwezax-diximuv-gewij.pdfIn PDF document text
- https://cdn.sqhk.co/tolononof/ejfhb3A/sadavowikuxez.pdfIn PDF document text
- https://cdn.sqhk.co/gezubesekar/h0rUjbJ/coppell_high_school_course_guide_2019.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446650/normal_60495511ec4ad.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4446401/normal_5fe17958e7f1a.pdfIn PDF document text
- https://mipirizu.weebly.com/uploads/1/3/2/6/132682564/sazodaxuw_vezadelamuz_duvisagaxedosi_zadimo.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4411001/normal_5ff97f17b9854.pdfIn PDF document text
- https://gedarimetesuja.weebly.com/uploads/1/3/1/3/131398281/cdb117c00392.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366976/normal_6003859c3cbfb.pdfIn PDF document text
- https://cdn.sqhk.co/notenirikev/ifemidu/real_survive_dead_zombie_shooter_apk.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4501989/normal_6047f5b1a7021.pdfIn PDF document text
- http://generalmassage.online/philips_nl9206ad-4_drachten_price3x5t0.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://fajazimigig.atwebpages.com/typewriter_repair_in_redding_california.pdfIn PDF document text
- http://vubelifijam.atwebpages.com/first_and_second_continental_congress_worksheets.pdfIn PDF document text
- http://ganubigeponato.rf.gd/506_assignment_3_answer_in_tamil.pdfIn PDF document text
- http://patudesaruvob.atwebpages.com/14631893031.pdfIn PDF document text
- http://dazomaxewu.epizy.com/zujanibuk.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_off00010627.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10627	5076 bytes
SHA-256: `be5a18b98c869e1b0518da081ad3fdc74d7ee82abed82af5253bea8d07afd843`
`font_01_sfnt_off0001174f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1174F	11976 bytes
SHA-256: `e76ab5615615d146cf0e6b2535398141605bd9b9a0988eb532585e50bbe15b3f`
`font_02_sfnt_off00013f0d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13F0D	4324 bytes
SHA-256: `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`

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