PDF malware analysis — malicious · e1431869e0cfbf83

MALICIOUS

PDF

82.2 KB Created: 2021-04-01 00:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25

MD5: 3c4768eca045754eae5596dfb8695301 SHA-1: adad4367199f1ef487304eb18a5080566e96d91a SHA-256: e1431869e0cfbf839f7f568023af62211c03d924df8acb2c6e652b13333ade2f

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable domains, and one prominent URL that appears to be a lure for free templates. The PDF structure and embedded content suggest it's designed to redirect users to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9954

Heuristics 5

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 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://baarspo.ru/123?utm_term=best+free+ppt+templates+2018 PDF link annotation
- https://cdn-cms.f-static.net/uploads/4421959/normal_60562eebabab2.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4480173/normal_5ff41d413ee1d.pdfIn PDF document text
- https://xepezexitig.weebly.com/uploads/1/3/0/9/130969834/vumeto-jativuzopeza.pdfIn PDF document text
- http://snegny.com/22091058174261dj.pdfIn PDF document text
- http://all-system7.club/duruveworixelekaxaguwomerpdix4.pdfIn PDF document text
- http://selolaz.66ghz.com/94514744074.pdfIn PDF document text
- https://tunuwadubozowe.weebly.com/uploads/1/3/4/3/134363043/1433127.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4386824/normal_5ff454025e3e4.pdfIn PDF document text
- http://vorgazme.com/how_to_make_photos_speakfzng5.pdfIn PDF document text
- http://wuzotevoxed.22web.org/easy_voice_recorder_apk_android_2._3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4443595/normal_604ce50976dd2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412757/normal_5fd76bfc4e99d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4458163/normal_5fdc752fc773e.pdfIn PDF document text
- http://roskycnmx.com/vewumofemefuvizetig3tmz.pdfIn PDF document text
- http://evromotors.net/how_to_add_triangles_in_photoshopmsagy.pdfIn PDF document text
- https://jugujepatuw.weebly.com/uploads/1/3/4/9/134900825/38748793.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450248/normal_602f214c25613.pdfIn PDF document text
- https://puduwuxibipufu.weebly.com/uploads/1/3/5/9/135966859/nemomowomukezex.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/damerirazib/cash_flow_from_investing_activities_balance_sheet.pdfIn PDF document text
- http://fewuzefar.rf.gd/color_blindness_test_download.pdfIn PDF document text
- http://mejoxuxo.rf.gd/biology_investigatory_project.pdfIn PDF document text
- https://s3.amazonaws.com/xajowu/what_is_the_price_of_royal_enfield_standard_350.pdfIn PDF document text
- https://s3.amazonaws.com/vutame/what_to_wear_for_formal_wedding_dinner.pdfIn PDF document text
- https://s3.amazonaws.com/visagogijulep/angular_formgroup_setvalue_example.pdfIn PDF document text
- https://s3.amazonaws.com/pajeriramal/ar_blue_clean_383_electric_power_washer.pdfIn PDF document text
- http://gamutikaguz.rf.gd/dunkin_donuts_munchkins_recipe.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_off0000f4ca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF4CA	5140 bytes
SHA-256: `1159bccb474c9c0bb2eddbedac3e836051e5ba2cd55fc0b3f4123534554415d4`
`font_01_sfnt_off0001063a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1063A	10948 bytes
SHA-256: `d15fda4faa4f5182aaa2078f4d5aeb20a2a0e4e142f841de76547d344b308531`
`font_02_sfnt_off00012b73.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12B73	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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