PDF malware analysis — malicious · 1d164446b07a8ff5

MALICIOUS

PDF

84.3 KB Created: 2021-03-11 03:45:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 1bbf4e6eeb0ceb2fddecd1e7423cc821 SHA-1: e31e455b2f09cfff86f1dbfeb791bc20056a8c16 SHA-256: 1d164446b07a8ff57ec098a7b5e62208e4c01a374d11fe8ae7ae596719d7c32e

66 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, with one specifically identified as a link farm hosted on disposable infrastructure. The ML classifier strongly indicated maliciousness, and the presence of external URIs suggests an attempt to redirect users to potentially harmful content. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

Heuristics 4

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/award?keyword=arquitectura+contemporanea+pdf PDF link annotation
- http://naxiramomamaz.66ghz.com/57889442407.pdfIn PDF document text
- http://bejuzoz.iblogger.org/40774942385.pdfIn PDF document text
- http://zemojuvasu.iblogger.org/41574029793.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://f4e740b0-69d0-4d5c-a0c7-362dc6b2ad6d.filesusr.com/ugd/0356fc_15a91c4fee8142cb822891bfbd8b5175.pdf?index=trueIn PDF document text
- http://wojixefem.epizy.com/lusisireviwajapogotirigat.pdfIn PDF document text
- https://s3.amazonaws.com/sixolose/marvel_avengers_movies_in_tamil.pdfIn PDF document text
- https://05282879-aed3-4f16-ac14-d534add4d4bd.filesusr.com/ugd/0f8b7c_da9c44c3a04d4e9880e7fb65e671c478.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/3e314dd5-585c-4ef0-8ee2-d7b249b8245c/maze_runner_2_free_full_movie_online.pdfIn PDF document text
- https://ac3db616-04cb-40f1-8357-c67041f5e20c.filesusr.com/ugd/eda9ba_8ef2856991964070ba39058126cf59e7.pdf?index=trueIn PDF document text
- https://uploads.strikinglycdn.com/files/649bb628-fd32-4dab-8345-81219392b380/hp_deskjet_6940_driver.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/18fe26d2-45de-4019-ae2a-08f86875e9e5/muvadabasujis.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8fc3ed90-76ae-4f0c-85dc-fba8be6df3e6/what_is_programming_language_ict.pdfIn PDF document text
- http://govezijatin.rf.gd/mini_meter_mod_apk.pdfIn PDF document text
- https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_e9e43a5115b1438680635e9dd829f8e1.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/gafedupeba/52258399106.pdfIn PDF document text
- http://dadorisisewane.epizy.com/highway_safety_act_alberta.pdfIn PDF document text
- https://6129906d-bc82-46a7-99f5-71793a58af3c.filesusr.com/ugd/d162e3_78cb5c816ae04f84b951579ce276d669.pdf?index=trueIn PDF document text
- http://xukoguxatuxoved.epizy.com/occupational_safety_and_health_in_telugu.pdfIn PDF document text
- https://s3.amazonaws.com/puretulenuza/plan_y_programas_2011_sexto_grado_primaria.pdfIn PDF document text
- https://s3.amazonaws.com/muvojugejoxip/nationaal_vergiftiging_informatie_centrum.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/cc82cb54-d2af-47cb-b8a9-a1b10515e53c/81048614762.pdfIn PDF document text
- https://s3.amazonaws.com/tomamujuf/31339032137.pdfIn PDF document text
- http://zavinawotomuvef.epizy.com/answers_in_genesis_world_religions_conference.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_off0000fc31.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFC31	5088 bytes
SHA-256: `31313ee9d7d19854c1665c6540939b84e620745b16459f8d999de56affe7920e`
`font_01_sfnt_off00010d60.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10D60	11968 bytes
SHA-256: `4f10e31ffbbab31a5d1b36b019ef7774efe525d7cb1fe92c73d5e3b65f318e3b`
`font_02_sfnt_off000133df.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x133DF	4324 bytes
SHA-256: `b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c`

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