Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad01c62b6d7b022e…

MALICIOUS

PDF

78.5 KB Created: 2021-03-18 06:29:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1cb65bd03aa77181049d3ce323e01361 SHA-1: 76671330402e09b4b461c94725b62004fdb2bbc7 SHA-256: ad01c62b6d7b022e3b939327da6aa4b1ad8c4f16c4475981e85db0d26820f445
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://nipisod.ru/wix?keyword=the+vintage+guide+to+classical+music+epub PDF link annotation
    • http://raisinslabs.club/philadelphia_inquirer_crossword_puzzle_answers5l54l.pdfIn PDF document text
    • https://gajevorotaro.weebly.com/uploads/1/3/5/3/135329880/xezivabarofedi.pdfIn PDF document text
    • https://cdn.sqhk.co/pobisobat/hhhfPRp/18824226791.pdfIn PDF document text
    • http://hs-life.ru/bamutegotamolukefh4xiq.pdfIn PDF document text
    • http://xubanapirobula.mypressonline.com/solucion_isotonica_definicion.pdfIn PDF document text
    • http://sks-expertiza.ru/64220082505jepfe.pdfIn PDF document text
    • https://cdn.sqhk.co/zolewiko/hgcqFTA/33490651830.pdfIn PDF document text
    • http://mebel-albero.ru/english_song_download_mp3_ringtonezhxr0.pdfIn PDF document text
    • http://xulazawelinuze.scienceontheweb.net/english_learning_book_free.pdfIn PDF document text
    • http://xanusojuruxu.sportsontheweb.net/pc_assembly_manual.pdfIn PDF document text
    • http://nanonewe.scienceontheweb.net/gufola.pdfIn PDF document text
    • https://vuderuxedus.weebly.com/uploads/1/3/4/6/134692959/1723072.pdfIn PDF document text
    • http://limons.space/4362417282yais3.pdfIn PDF document text
    • http://bluebadgeapproval.com/medical_fitness_certificate_format_for_central_govt_employeesiizfz.pdfIn PDF document text
    • https://bipinudaw.weebly.com/uploads/1/3/4/7/134718108/861486.pdfIn PDF document text
    • http://namelesssouth.xyz/facial_client_intake_form_template3kafi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jazopizebe.atwebpages.com/26255789355.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EB 5540 bytes
SHA-256: 9fbb5517f33d2450aa456e86f55f2edcee974b29013978910068b2f0f4bd6ef1
font_01_sfnt_off000105a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105A4 11324 bytes
SHA-256: b32ca02f015fcc5c19613de1b01659d97466d4a742ad9faf048b7aaa2b2a3e95

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