PDF malware analysis — malicious · 730e3939f835e960

MALICIOUS

PDF

83.5 KB Created: 2021-03-22 23:05:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02

MD5: b2d7b5a61619ec3390cc5cf0e099810c SHA-1: ca27f1602388cc54feb1d4cbe526e9c5a46a82ae SHA-256: 730e3939f835e960003d1e8440cb542baf736cbd103346b1813c9481257daba6

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

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://golowaki.ru/wix?keyword=destiny+2+lfg+discord+temporary+outage PDF link annotation
- https://cdn-cms.f-static.net/uploads/4420765/normal_6009e84d8bc3f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4421970/normal_5fdb30690bade.pdfIn PDF document text
- http://wowezixuxaxu.22web.org/40600400093.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4366365/normal_5ff019060ee60.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417986/normal_60360d5b598b0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4385230/normal_604d2da90177c.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4499633/normal_6001e34828d92.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413455/normal_60436cc052cfa.pdfIn PDF document text
- http://fujenotaj.22web.org/hill_rom_bed_weight_capacity.pdfIn PDF document text
- http://nokexukuzifuv.22web.org/45260154136.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://kowewewabozete.epizy.com/57081261713.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/55f1cf3a-ada2-4569-b1b7-b7c20e17f5ef/34356830543.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/c7caaeb8-be66-45b4-b375-ff8cba606f45/what_is_ms_word_2007.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/76fb49ee-f2b9-43c1-bbdf-97db64bba5df/vimozipagososidijuxubi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b7875435-91d0-4bf3-9ed8-74f5da6e446c/kubota_bx2230_owners_manual.pdfIn PDF document text
- http://ruvesigokusi.epizy.com/niviv.pdfIn PDF document text
- http://vujewoperat.rf.gd/materialismo_histrico_e_economia_marxista.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/eb08914c-4081-46f9-8e8c-649ba2ff5f0e/a_confederacy_of_dunces_summary_chapter_1.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e6c26a05-dee7-49ba-8468-8101367d8cbf/how_long_is_it_taking_to_get_stimulus_checks_by_mail.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/86cd5291-3001-43e2-b58e-0b22fcd505a6/line_6_spider_iv_15_price_philippines.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d8ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD8CE	5684 bytes
SHA-256: `a1d4b4ef63028827178241b03ad21f71b37cc5aca084a3cd06c9f9e03f503cc0`
`font_01_sfnt_off0000eca2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xECA2	5708 bytes
SHA-256: `b4fe54c985c6ab06bbcd799a5e4a141754d0f872982755dc53d24c81c0a4980b`
`font_02_sfnt_off00010015.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10015	13232 bytes
SHA-256: `1946ff0fd479bec80700bb834cab484308d0aecace956a465349a252be3db28e`
`font_03_sfnt_off00012a22.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12A22	16204 bytes
SHA-256: `532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e`

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