Malicious PDF — malware analysis report

Static analysis result for SHA-256 5587ad9ff0085356…

MALICIOUS

PDF

77.3 KB Created: 2021-02-27 21:19:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 96a6219a3a0ae8b3ccfa1fba90a09a10 SHA-1: df6e0341d5ccd4e93a380214dc4a7dde4ce34a37 SHA-256: 5587ad9ff00853564058972da3bbe3cb976caac8d152cc4140465b71f5c1e2bd
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://dafemum.ru/award?keyword=titanic+voices+from+the+disaster+lexile In PDF document text
    • https://cdn.sqhk.co/nexasolonit/gejcXgc/95846098961.pdfIn PDF document text
    • https://dezirivudamowi.weebly.com/uploads/1/3/1/8/131856369/minijuzojufugu.pdfIn PDF document text
    • http://kagoxugukata.22web.org/labor_day_worksheets_for_1st_grade.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/hjgg9We/17425249773.pdfIn PDF document text
    • https://cdn.sqhk.co/sivunukiwe/hR0jeG0/donulasubekipekuwotowosa.pdfIn PDF document text
    • https://lodotimafigu.weebly.com/uploads/1/3/5/9/135981467/68b3e.pdfIn PDF document text
    • https://cdn.sqhk.co/dutudovajud/jfHm9ji/how_to_prepare_sweet_potatoes_in_the_oven.pdfIn PDF document text
    • http://rigudozefogo.mypressonline.com/6377013658.pdfIn PDF document text
    • http://kerutugizuxig.mygamesonline.org/38641522851.pdfIn PDF document text
    • https://cdn.sqhk.co/dawadetugas/hji0Fhb/72072962265.pdfIn PDF document text
    • https://cdn.sqhk.co/wadupaxi/ipiiajb/zombie_outbreak_simulator_gameplay.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://komujawabajufob.rf.gd/design_charrette_report.pdfIn PDF document text
    • http://tazafira.epizy.com/gusabafevutewajutewu.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/chrome_browser_for_android_2._3_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/zemolu.pdfIn PDF document text
    • http://simebowum.rf.gd/new_soul_songs_free.pdfIn PDF document text
    • http://jasunusemoki.onlinewebshop.net/38420273015.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/extraordinary_popular_delusions_and_the_madness_of_crowds_sparknotes.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_off0000f2f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F5 5336 bytes
SHA-256: 0e1977eabe815a5ac012b2b0c7e06e41de4de4c1cd259afa79fed6d15b792fbf
font_01_sfnt_off000104fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104FB 10232 bytes
SHA-256: 987ad52baa434b785f0154121752ebfb52414a625cc3e6d16a07a176eaab6a0e

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