Malicious PDF — malware analysis report

Static analysis result for SHA-256 492b19f5f425eb8a…

MALICIOUS

PDF

71.1 KB Created: 2021-02-26 14:19:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: dc4cd3dae8eab4cdbc4deef49e4d0310 SHA-1: 46eae517e5e73c8eed90bfb5d296343208be5ec7 SHA-256: 492b19f5f425eb8af7791668f9faf7b8ba6f0711a689a475f807c3384bb2b271
184 Risk Score

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
  • 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 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/wix?keyword=rockport+ma+fishing+report In PDF document text
    • https://mifepomaxa.weebly.com/uploads/1/3/4/8/134897651/1807934.pdfIn PDF document text
    • http://junumidutuzakox.getenjoyment.net/nifowevunufobixo.pdfIn PDF document text
    • https://jofanota.weebly.com/uploads/1/3/2/3/132302765/7dfb36088d7c91.pdfIn PDF document text
    • http://fupemagis.mywebcommunity.org/is_nj_transit_monthly_pass_round_trip.pdfIn PDF document text
    • http://wamuwosola.mygamesonline.org/what_is_5_litres_in_pints.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/suzosifuwezowa.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/where_does_it_say_in_the_bible_that_god_gives_us_free_will.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365542/normal_5fe4ad3a2f3fe.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/66832984730.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wadoromutisagar.myartsonline.com/sevozusudafut.pdfIn PDF document text
    • http://lopovimefadepom.epizy.com/koronawilo.pdfIn PDF document text
    • http://zubimox.rf.gd/weber_grill_restaurant_schaumburg.pdfIn PDF document text
    • http://luvibiw.epizy.com/4_types_of_sentences_worksheet_answers.pdfIn PDF document text
    • http://nugonubofatu.epizy.com/kosokujaluxapiweg.pdfIn PDF document text
    • http://fijinibegomiba.rf.gd/43263741119.pdfIn PDF document text
    • http://joxesovifelerav.epizy.com/balgeet_mp4_song.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/81750173615.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_off0000d9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D7 5468 bytes
SHA-256: f468be1326ee05510dc32dad9f07b2f2a2d32e2784c5e191ff2aa9f449894a28
font_01_sfnt_off0000ec54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC54 10380 bytes
SHA-256: 7f755f26dce3818bb506bb8bd413f63f18acf91bd04acf847fca6ad734be913f