PDF malware analysis — malicious · 80fba8134ed0e20a

MALICIOUS

PDF

80.1 KB Created: 2021-06-02 22:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18

MD5: 051d7fe00f8684e9ebce306fe063fa52 SHA-1: b7c5aad9784d3cfe6321c07b5ae58b35fd1e7d63 SHA-256: 80fba8134ed0e20a2ea3783a75836c44013770daecbd18a286a0d3e1af865cd8

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by multiple heuristics and a machine learning classifier, and is also flagged by ClamAV. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm or phishing operation. The embedded URL `https://resalured.ru/123?utm_term=create+a+splash+screen+android+kotlin` indicates a lure related to Android development, likely to direct users to malicious content or phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9991

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 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.
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://resalured.ru/123?utm_term=create+a+splash+screen+android+kotlin PDF link annotation
- https://kodepifaz.weebly.com/uploads/1/3/4/7/134705681/dibamubibakup-patolufo-vodupufunudis.pdfIn PDF document text
- https://natadafupekex.weebly.com/uploads/1/3/1/8/131856288/jazevalojulem_pagazawom.pdfIn PDF document text
- https://sukifife.weebly.com/uploads/1/3/4/3/134334287/sabokebubanoz.pdfIn PDF document text
- https://gixefizavemo.weebly.com/uploads/1/3/4/1/134108956/1400556.pdfIn PDF document text
- https://valuluxunu.weebly.com/uploads/1/3/2/7/132710491/firubarorafulu.pdfIn PDF document text
- https://jafoxoxuxovawe.weebly.com/uploads/1/3/0/8/130813536/52df686.pdfIn PDF document text
- https://pufemomanuxisi.weebly.com/uploads/1/3/4/3/134344256/3f583f37da0.pdfIn PDF document text
- https://ginataxidorivez.weebly.com/uploads/1/3/4/0/134041929/poriguvomala.pdfIn PDF document text
- https://wirumexazejop.weebly.com/uploads/1/3/4/5/134599385/384f5c9425fcce2.pdfIn PDF document text
- https://rojimabilaraxum.weebly.com/uploads/1/3/5/3/135314729/vobobalagub_lunizal_bawekewumitil.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
- http://nolumemonip.pbworks.com/w/file/fetch/144509583/saluvipesomixoteja.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b2702052-0b88-462d-9c72-d721ca32c74f/is_swollen_hands_a_sign_of_labor.pdfIn PDF document text
- http://vamafob.pbworks.com/f/powerscore_gmat_critical_reasoning_bible_2020.pdfIn PDF document text
- http://doxawadar.pbworks.com/f/zexujapajego.pdfIn PDF document text
- http://wojipag.pbworks.com/f/starbucks_barista_espresso_machine_instructions.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/33106680-13a2-4691-90c0-1f5f3d9a0506/20454781035.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7efefb62-3677-4986-9618-bfb7fd07cc01/free_kannada_movie_songs_download.pdfIn PDF document text
- http://pusavivo.pbworks.com/w/file/fetch/144477696/xixifijovoxaku.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/562543ef-babe-4d66-bf54-aa85ede558f0/30932183197.pdfIn PDF document text
- http://dejimebez.pbworks.com/f/repapuvobigajifatexulot.pdfIn PDF document text
- http://bofamawetodo.pbworks.com/f/cuantos_atp_se_producen_en_la_respiracion_anaerobia_y_aerobia.pdfIn PDF document text
- http://fepewuwakow.pbworks.com/f/apply_for_reduced_fare_metrocard_in_person.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e349.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE349	2900 bytes
SHA-256: `40ce0bc9b113ef031639604f059b60aa9f1e41b097d60e75bfbf620cccc66306`
`font_01_sfnt_off0000ed8d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xED8D	5036 bytes
SHA-256: `77783691c967a7de7d758632b1289b3f28b2843b0e73f72c30121ae8adfb88a7`
`font_02_sfnt_off0000fe93.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFE93	10572 bytes
SHA-256: `2ade9ee2457ac6894b324e9e9fe189324d52f48caa717260ba36aec44f6ea610`
`font_03_sfnt_off000122cd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x122CD	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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