PDF malware analysis — malicious · 703d269ad4037af0

MALICIOUS

PDF

76.0 KB Created: 2021-02-27 19:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12

MD5: fdf322f0b79c094e1b46a2ec22d80962 SHA-1: 78947823d38a1c3c5132424b8b54735ffe8c88c7 SHA-256: 703d269ad4037af0aed7f138dd25494edc0940ec55a614ca45a22c2b06a9773b

244 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded URLs, many pointing to disposable domains and redirector infrastructure, indicating a link farm designed to manipulate search results or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution via these links. No scripts were extracted, but the PDF structure itself is weaponized.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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.
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://yafferge.ru/award?keyword=what+is+rent+stabilization+in+nyc In PDF document text
- http://nuvagefo.medianewsonline.com/fizuluxego.pdfIn PDF document text
- https://cdn.sqhk.co/zuwiwejagub/FHFgdhd/wijenapejatijofe.pdfIn PDF document text
- http://zememor.sportsontheweb.net/new_yorker_student_subscription_tote.pdfIn PDF document text
- http://jiteruruw.sportsontheweb.net/wazixazeruvanuvopijajaj.pdfIn PDF document text
- https://zalinojawovuga.weebly.com/uploads/1/3/4/8/134886974/vivito_bajemexib_mewixiwawagiva.pdfIn PDF document text
- https://bibatuzasofobi.weebly.com/uploads/1/3/4/8/134879938/9534057.pdfIn PDF document text
- https://keminozabigorez.weebly.com/uploads/1/3/4/8/134886120/14133e7b15236.pdfIn PDF document text
- https://cdn.sqhk.co/pibegufuxova/bhdJldx/does_he_like_me_signs_middle_school.pdfIn PDF document text
- https://cdn.sqhk.co/tetolonul/ihaejaN/how_to_draw_rappers_as_cartoons.pdfIn PDF document text
- https://guzajemifuraruv.weebly.com/uploads/1/3/0/8/130874286/zifupigifibudo.pdfIn PDF document text
- http://xevamoz.mygamesonline.org/fender_twin_reverb_tubes.pdfIn PDF document text
- https://cdn.sqhk.co/kenixidoxexi/chbKjhE/zombies_tiny_desk_concert.pdfIn PDF document text
- http://jepenufi.getenjoyment.net/learn_hindi_books_free_download.pdfIn PDF document text
- https://cdn.sqhk.co/labifikup/Hghhjjb/happy_wheels_full_game_download_android.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://kofaxafogi.myartsonline.com/grounding_techniques_for_panic_disorder.pdfIn PDF document text
- http://nukilaba.myartsonline.com/asp.net_mvc_4_projects_free_download.pdfIn PDF document text
- http://diwavubodinaroj.myartsonline.com/zilumokixivoke.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_off0000e05c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE05C	4980 bytes
SHA-256: `4232a3a9afebadb44571f667611651da41647d3b0de26982a792ca1a52371c3f`
`font_01_sfnt_off0000f14d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF14D	10412 bytes
SHA-256: `87637eb30b980e74f319f14f110f43f694dd92a26a7c0cfd24bd4a3259d68ac4`
`font_02_sfnt_off000114ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x114FF	4324 bytes
SHA-256: `9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2`

Open this report in the interactive analyzer, or submit your own file for analysis.