Malicious PDF — malware analysis report

Static analysis result for SHA-256 b587a347de47bbc7…

MALICIOUS

PDF

78.3 KB Created: 2021-03-16 20:05:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c4b6ba8265a25108b919b46c586c86bf SHA-1: ac7e880a70d0b8050b6db8d7774d3b439b18940b SHA-256: b587a347de47bbc7d34ddde634dccc41717b71eff3883ff19bb6666424a99b26
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that redirects to a website offering an 'Android 7.0 frp remove apk'. This suggests a phishing or scam attempt, likely using the document as a lure to drive traffic to the malicious site. The ML classifier strongly indicated maliciousness, supporting this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://jacksth.ru/123?utm_term=android+7.+0+frp+remove+apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4401692/normal_5ffe4d0054a43.pdfIn PDF document text
    • http://kejemuvewi.22web.org/dizegitejitepavotunibu.pdfIn PDF document text
    • https://bedapidipofawif.weebly.com/uploads/1/3/2/7/132711979/3926147.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487208/normal_5fd8930540551.pdfIn PDF document text
    • https://cdn.sqhk.co/luwukamuku/gdM1ici/adidas_face_mask_review_glasses.pdfIn PDF document text
    • https://cdn.sqhk.co/vonitumefide/dr4ahbn/wonder_woman_full_movie_in_tamilgun.pdfIn PDF document text
    • https://cdn.sqhk.co/buwowunuras/gqLhbeY/the_impossible_quiz_book_chapter_3_notdoppler.pdfIn PDF document text
    • https://lupudeme.weebly.com/uploads/1/3/1/3/131378919/1746111.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384482/normal_600d86e5da239.pdfIn PDF document text
    • http://femukujisidape.iblogger.org/wutosetet.pdfIn PDF document text
    • https://kaxaxelakag.weebly.com/uploads/1/3/4/2/134235500/9271467.pdfIn PDF document text
    • https://cdn.sqhk.co/mugegiduveb/hf27Ghf/xujuxovobokoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_60355e9a580bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427781/normal_5fc954aeccd95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449605/normal_604e56adc54b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368222/normal_5ffe46c9d5219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384464/normal_60251e2c6800c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416666/normal_5ff2e517875ec.pdfIn PDF document text
    • https://malugula.weebly.com/uploads/1/3/2/6/132695531/vivumageroropewer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/core_java_interview_questions_and_answers_journaldev.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/street_fighter_apk_data.pdfIn PDF document text
    • http://nibejodawugizex.rf.gd/escape_room_level_51_answer.pdfIn PDF document text
    • http://lidekajemunow.epizy.com/factorization_worksheet_for_grade_9.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/58996326383.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/bdfoundry_ninja_guide.pdfIn PDF document text
    • http://widafasamuj.epizy.com/85139422224.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f51c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF51C 5344 bytes
SHA-256: 2239e9c94ed14daac47db911a184954a204930f2174f770edc0f543b126a867a
font_01_sfnt_off00010751.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10751 10596 bytes
SHA-256: b6e04000b542953aad8bbad65d998ef6e2677484214c161c796a8140d50539e2

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