PDF malware analysis — malicious · d955d6e9eb8d4166

MALICIOUS

PDF

136.9 KB Created: 2021-03-29 06:52:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25

MD5: f01e6782b3ee8ef9b700804ebf91568e SHA-1: 5246f13b16f58ebc9310ccaa4f625538a881f90c SHA-256: d955d6e9eb8d41665aa17c27167cf6dfc621931504d7c1a955f584014e8e4a6d

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9987

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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://soxebez.ru/123?utm_term=cheating+apps+for+android PDF link annotation
- https://cdn.sqhk.co/juxajomuz/jniaWBA/adderall_withdrawal_forum.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4499023/normal_5fd92e8abb8d0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4417312/normal_6023108d237b7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375694/normal_604b66bc2a357.pdfIn PDF document text
- https://cdn.sqhk.co/rabuvimi/sqpRHhg/56147684774.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4383451/normal_5fe503aeaf814.pdfIn PDF document text
- http://nijewogifuzazi.mypressonline.com/rixarorijopebeb.pdfIn PDF document text
- https://cdn.sqhk.co/vusopukov/ihhgLxq/likee_apk_free_download_for_pc.pdfIn PDF document text
- http://bebetadiruj.mywebcommunity.org/94485118748.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4405662/normal_60419afc42630.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4503617/normal_5fde306b71788.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4383928/normal_6034f8c462ca0.pdfIn PDF document text
- https://cdn.sqhk.co/sewujuzanas/fGKihja/84210335926.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4426688/normal_601b32832b21d.pdfIn PDF document text
- http://navevukosuso.mypressonline.com/atresia_de_vias_biliares_en_neonatos.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4460449/normal_604e986a36481.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://uploads.strikinglycdn.com/files/49f3beee-6b57-4c0a-9388-ac3f23ab7819/lakshmi_ashtothram_stotram.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/16c028e9-a867-4d27-9f98-1fc28232f7e4/flysky_fs_i6_receiver_wiring.pdfIn PDF document text
- https://s3.amazonaws.com/norozovijalu/charleroi_airport_flights_information.pdfIn PDF document text
- http://tajavuminona.atwebpages.com/vaveleme.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e34602be-39c3-4943-9ab0-5b6c2e57dbd2/what_are_the_most_common_circuit_symbols.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8229a669-ef36-4364-8a1a-62431d62460c/monster_hunter_2020_milla_jovovich_full_movie.pdfIn PDF document text
- https://s3.amazonaws.com/furunumaroxun/11578389956.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_off0001d064.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1D064	5084 bytes
SHA-256: `f3eb25f80394d7249212f499986735194c2ec8d7df93cb2e46b842b369b7b8b9`
`font_01_sfnt_off0001e1a5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1E1A5	11340 bytes
SHA-256: `eb10bc40b023ce9cc2fb33dba9e0355d0785eebebda3adef14ed36d94a7abd33`
`font_02_sfnt_off000207ab.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x207AB	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

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