PDF malware analysis — malicious · c1cb46322afbfa15

MALICIOUS

PDF

131.1 KB Created: 2021-03-23 05:46:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: 499662b4021a47b214093999ed223e48 SHA-1: b4fd29140e99bc1b6845a10f79b7983d5b1b2e35 SHA-256: c1cb46322afbfa15e061175beb8b23465e3bf72e28caeea6fc14ff4fef199b9b

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to disposable domains and are indicative of a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The presence of a URL like 'https://fokemale.ru/wix?keyword=dragon+ball+dokkan+jp+apk' suggests a lure to a site offering game-related content, which is a common tactic for phishing or malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

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://fokemale.ru/wix?keyword=dragon+ball+dokkan+jp+apk PDF link annotation
- https://static.s123-cdn-static.com/uploads/4451028/normal_5fde2155e8510.pdfIn PDF document text
- http://nizavevorupuj.mywebcommunity.org/best_oil_for_honda_eu2200i_generator.pdfIn PDF document text
- http://zexaribamemavi.sportsontheweb.net/nipabinuzonaziwipifo.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4380699/normal_5fec3b21775b9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460457/normal_6034df36e510f.pdfIn PDF document text
- http://keepmaxi.space/how_to_make_your_own_website_to_sell_lashesympqg.pdfIn PDF document text
- http://help-lnstagram-verifycopyrgiht.com/age_of_war_3_flash_gamescwgv0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446489/normal_603ea49dea1d6.pdfIn PDF document text
- http://barajofa.mywebcommunity.org/automobile_parts_assembly.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404497/normal_602062878f1b8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4478131/normal_601315a223894.pdfIn PDF document text
- http://uplrezina.site/fanixiboo4ubl.pdfIn PDF document text
- http://sakepugikunon.mypressonline.com/caprice_24_trumpet.pdfIn PDF document text
- http://toolsbestpricemicrometer.site/centos_6._5_iso_64_bitslb9w6.pdfIn PDF document text
- http://verifiedbadges-form.com/alien_isolation_artd3t5p.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://xologikaju.atwebpages.com/era_mesozoica_caracteristicas.pdfIn PDF document text
- http://duvodix.myartsonline.com/beneficios_de_la_zanahoria.pdfIn PDF document text
- http://dowuvoduwitovos.atwebpages.com/96316487515.pdfIn PDF document text
- https://85ed388a-52e0-4e79-9737-9d4b769dda71.filesusr.com/ugd/bb10c5_8c48960702944c09b705054be20d1392.pdf?index=trueIn PDF document text
- https://b993c520-4fc9-488d-8dda-35d8b3dc2713.filesusr.com/ugd/6f5492_7ba4c7e3438940bd93b6e0ed34b6e410.pdf?index=trueIn 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
`stream_003_off0000f7f7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0xF7F7	58308 bytes
SHA-256: `37a87cf966cf730c4131faa33b5d0a590c39d1ab6f3f1c116891b86083a58b24`
`font_01_sfnt_off0001aab2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1AAB2	5228 bytes
SHA-256: `a95ac5b6c6571cf8b39e8cf1ce50f697bbcbd67a0f569e19bfd1f4f22287748f`
`font_02_sfnt_off0001bc8e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1BC8E	12132 bytes
SHA-256: `a69d471ef1df72ae59e318d9f4fcf119d4a5c7840c53929f74c0a08124134e19`
`font_03_sfnt_off0001e612.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1E612	16456 bytes
SHA-256: `40bda58283a353202acc62acacb249a177133217846931dc6bd453d03fa1d674`

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