PDF malware analysis — malicious · 28e322bc05e6d3b4

MALICIOUS

PDF

77.6 KB Created: 2021-02-15 12:53:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23

MD5: 86843f3717ff3022975b73afbd3440ec SHA-1: 327b29b9488c5ad40267dc10d00868f874151bfc SHA-256: 28e322bc05e6d3b4649f18be245d3691d9611666851dc04e34693f1351fe2032

246 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm with numerous external URLs, including one impersonating Netflix, suggesting a credential phishing campaign. The presence of embedded JavaScript, though not fully analyzed, likely facilitates the redirection to malicious sites or the execution of further exploits.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 7

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH

Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://komibaxes.weebly.com/uploads/1/3/1/6/131606619/e46eb5d.pdf.
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/strik?utm_term=is+altered+carbon+book+good PDF link annotation
- https://komibaxes.weebly.com/uploads/1/3/1/6/131606619/e46eb5d.pdfIn PDF document text
- https://cdn.sqhk.co/pedidagow/gXjehbW/3733155205.pdfIn PDF document text
- https://cdn.sqhk.co/vesagivara/tgdXAd3/4012_isle_of_pines_dr_moneta_va_24121.pdfIn PDF document text
- http://usesalon.xyz/ranovasodubivomuxalosa6ge1z.pdfIn PDF document text
- https://sukaxivex.weebly.com/uploads/1/3/4/8/134895869/belizer.pdfIn PDF document text
- https://finikepimu.weebly.com/uploads/1/3/4/0/134017618/8875407.pdfIn PDF document text
- https://vataripisak.weebly.com/uploads/1/3/4/6/134600115/zilolojoretu.pdfIn PDF document text
- http://zalofamanaw.22web.org/45430707925.pdfIn PDF document text
- http://piruzinomezobif.22web.org/60591630205.pdfIn PDF document text
- http://6gusevshop.website/sigekovawawuxizanobf020.pdfIn PDF document text
- https://ximabetewu.weebly.com/uploads/1/3/1/3/131384229/3916671.pdfIn PDF document text
- https://widedopeb.weebly.com/uploads/1/3/5/9/135970132/jivakipekig.pdfIn PDF document text
- https://kifenefaru.weebly.com/uploads/1/3/4/3/134327755/zumixev.pdfIn PDF document text
- https://kelogukagikuval.weebly.com/uploads/1/3/0/7/130739039/8907240.pdfIn PDF document text
- https://gefivogixofix.weebly.com/uploads/1/3/0/9/130969648/1d3d216175d66.pdfIn PDF document text
- https://jobalexaxikut.weebly.com/uploads/1/3/4/8/134892204/f4fabb.pdfIn PDF document text
- https://patewowuxafopon.weebly.com/uploads/1/3/4/5/134595548/8242277.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://gurifituzegotu.rf.gd/fesegivumajufebenorip.pdfIn PDF document text
- http://vugikalijuboxo.epizy.com/mofapabuwifamatidaxonorar.pdfIn PDF document text
- http://bemogabidemixu.epizy.com/rijajerexinokivok.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_off0000f2fe.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF2FE	5248 bytes
SHA-256: `9ce882fe31d351b9355eb2afdd039f91f0ee24c59cb4954730cc00763a481c7c`
`font_01_sfnt_off000104e3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x104E3	10604 bytes
SHA-256: `72f70c3347c93e9de3692f31dc0f27ad57f53aabfe273391a2f12d00038e3160`

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