Malicious PDF — malware analysis report

Static analysis result for SHA-256 449f81a6ce5a49dc…

MALICIOUS

PDF

91.2 KB Created: 2021-04-24 22:10:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 493027c580b53993d820698e4b37373b SHA-1: 517563948af1a2f49287531362fc5ff57c9d286e SHA-256: 449f81a6ce5a49dc8e73286377e72f205d405c3b35e3175e0b060a42770f7ca0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9992

Heuristics 5

  • 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 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://vilenefex.ru/strik?utm_term=keurig+k+elite+c+costco+reviews PDF link annotation
    • http://steblin.pro/pejulojelolilir4gid6.pdfIn PDF document text
    • https://sufixekanol.weebly.com/uploads/1/3/4/7/134712322/b8ab9d60207.pdfIn PDF document text
    • http://xtrading.buzz/7968782953w3aq1.pdfIn PDF document text
    • https://jeratevi.weebly.com/uploads/1/3/0/7/130774970/e8bfc28ef50.pdfIn PDF document text
    • https://vusimipemukebev.weebly.com/uploads/1/3/0/8/130814393/xokaguwixoja_dogisusojadukar_mexikozezum_xitaligafenu.pdfIn PDF document text
    • http://fabimepela.22web.org/26437437130.pdfIn PDF document text
    • https://jadojojipolukot.weebly.com/uploads/1/3/5/3/135337887/mozuwa.pdfIn PDF document text
    • http://zuzutogutid.22web.org/sikunediwuzepovoluropafu.pdfIn PDF document text
    • http://somirolixikaf.iblogger.org/sound_booster_new_version_free.pdfIn PDF document text
    • https://sebaderibegagib.weebly.com/uploads/1/3/4/5/134583030/gutorapavaru.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b702497-160d-4e61-9350-290ff5c194f9/pride_and_prejudice_1995_cast_mrs_bennet.pdfIn PDF document text
    • http://ximumipos.rf.gd/metro_cash_and_carry_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11012a96-ffed-4aad-b04c-48aeaa3b4350/masoretic_text_kjv.pdfIn PDF document text
    • https://s3.amazonaws.com/rikolesafuwofar/chicco_bravo_stroller_tray.pdfIn PDF document text
    • http://wilesodirax.epizy.com/dasege.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a73c05db-e239-4800-be54-ad2cf9d96086/samsung_dishwasher_dw80k7050us_not_draining.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/backtrack_os_iso.pdfIn PDF document text
    • http://dexutosujusu.epizy.com/48782621727.pdfIn PDF document text
    • http://xopapikalemeb.rf.gd/12158136232.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/511611458.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51cd4d46-41f5-4c85-a287-6fe0e1176ff8/74272969339.pdfIn PDF document text
    • http://tubupokus.rf.gd/raviwotozolugunuwumeda.pdfIn PDF document text
    • https://s3.amazonaws.com/posaxugidut/7623596648.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66ab1bf6-7024-4676-9358-397797b8eb2e/zakikudinonur.pdfIn PDF document text
    • http://faxanudof.epizy.com/83813037912.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_off000124e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124E0 4944 bytes
SHA-256: 43de36b1839dfe70140f6d90d64a2dda142d71b008c8c280043e102a54eaee50
font_01_sfnt_off000135e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135E3 12180 bytes
SHA-256: 9832af4aff57cf3eba0a4ad2ddec7425819e0473ca1ff5a3590ea02169b90651

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