Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ef90be8ea4aefd…

MALICIOUS

PDF

67.0 KB Created: 2021-03-11 17:07:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a2e5b1fa211dd822c88fe73ea13d62c8 SHA-1: cd62d315079a78f0fa10fb257b3fd828256c9dd4 SHA-256: f3ef90be8ea4aefd2f54e3f28bc536b7cd299589be50177f6ccf9a45c5e56020
186 Risk Score

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
  • 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.
  • 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://jumiwimov.ru/wix?keyword=kuta+software+two+step+equations+answer+key PDF link annotation
    • http://bebetadiruj.mywebcommunity.org/2020_sso_redeem_codes_star_coins.pdfIn PDF document text
    • http://ruluzuzadol.mypressonline.com/grilled_ham_and_cheese_sandwich_oven.pdfIn PDF document text
    • http://kolejuf.iblogger.org/head_soccer_character_unlock_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/digipexula/aJTjiq0/zowibesawadimuzanakiren.pdfIn PDF document text
    • http://sesesuruko.mypressonline.com/tiwuzamagox.pdfIn PDF document text
    • https://mimejomukokije.weebly.com/uploads/1/3/4/5/134510045/3233807.pdfIn PDF document text
    • https://visofamawuri.weebly.com/uploads/1/3/2/3/132303269/mufubul.pdfIn PDF document text
    • https://cdn.sqhk.co/xefijumu/bigfgXI/alien_swarm_reactive_drop_cheat_engine.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/tijh8nz/asiana_a330_business_class_trip_report.pdfIn PDF document text
    • http://lumobumekola.getenjoyment.net/fawev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0d3c4653-ec4b-4b04-9c20-59e348ba858e.filesusr.com/ugd/62200f_c249d2f5ee9a4937bdc43175014b29f3.pdf?index=trueIn PDF document text
    • http://fumibilulad.atwebpages.com/13065457405.pdfIn PDF document text
    • https://9a89a7da-ede3-42eb-a537-7416be21eb2d.filesusr.com/ugd/aaaf79_fe6292bed2634352ab2c04cce28f8e94.pdf?index=trueIn PDF document text
    • https://e905e09d-7ddd-4aab-833c-73500e817873.filesusr.com/ugd/f4c08b_17be9147a6014203ad0abbf99723f108.pdf?index=trueIn PDF document text
    • http://kisezemewarajox.rf.gd/21101523537.pdfIn PDF document text
    • https://94aa8f26-b07a-4c24-bdb4-4112657565c9.filesusr.com/ugd/37428b_c47c685bce4e445aaa422e55495b2980.pdf?index=trueIn PDF document text
    • http://tiluxusimutine.atwebpages.com/seven_years_old_song_mp3.pdfIn PDF document text
    • https://94226b1b-8363-4ad6-a779-e61b7b16ff5b.filesusr.com/ugd/b3bc21_f2b7ad76c67a4dedab0cf84162bad768.pdf?index=trueIn PDF document text
    • http://xesewopalokix.epizy.com/tubavubisofaw.pdfIn PDF document text
    • http://jefofijoker.rf.gd/vobegafaja.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_off0000cb44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB44 5216 bytes
SHA-256: 30a79f71dee10ed245d78fd6816e9bcfacfc7724254c2adbd7328b2a23b633bb
font_01_sfnt_off0000dd36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD36 9892 bytes
SHA-256: 32232c9592efd497d89258a0a89b35fb355354150ee3e5210bceac430c3f5f86

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