Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f118356cf881117…

MALICIOUS

PDF

67.3 KB Created: 2021-02-23 04:06:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e4b908da079972139bc610e1b9a560c1 SHA-1: 83d0b10cd61a3b7da5356fda9915c9d1d7cded9c SHA-256: 3f118356cf88111760e1d05c651a049d8ea73297637005b37a9454f30fb41c2b
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://yafferge.ru/wix?keyword=operate+now+hospital+unblocked In PDF document text
    • https://wujabadatudipox.weebly.com/uploads/1/3/5/4/135400083/1479342.pdfIn PDF document text
    • https://diritirafimiwav.weebly.com/uploads/1/3/4/3/134376035/ruzoxabotosuka.pdfIn PDF document text
    • https://cdn.sqhk.co/wemitupu/K9ELgfQ/download_game_heaven_travel_mod_apk.pdfIn PDF document text
    • http://detonicinitalia.website/dutugaxonab1ikob.pdfIn PDF document text
    • https://cdn.sqhk.co/sofaxuleruri/gfjh3d2/7663325997.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/gggigec/59540170159.pdfIn PDF document text
    • https://cdn.sqhk.co/kowalaxu/Ao9ggVg/zepewekitiwavibijowilo.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/ToqOiaQ/shoot_the_apple_online_game.pdfIn PDF document text
    • https://cdn.sqhk.co/simikitivo/fgfjidS/lep_s_world_2_online_spelen.pdfIn PDF document text
    • https://cdn.sqhk.co/tukawezezo/dLgjoig/dokuzufuzepapusiw.pdfIn PDF document text
    • https://talaxosukizarom.weebly.com/uploads/1/3/0/7/130775084/8445680.pdfIn PDF document text
    • http://trastenmyqort.online/92043510094k7bfb.pdfIn PDF document text
    • https://jakinazar.weebly.com/uploads/1/3/1/0/131070367/fekafotasogapenajo.pdfIn PDF document text
    • https://cdn.sqhk.co/lilavokolet/qAoiegd/sprint_stick_it_to_the_man_commercial.pdfIn PDF document text
    • https://busedulaxuxelo.weebly.com/uploads/1/3/1/3/131379622/navoveseviti_belitov.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xaduvegovoz.rf.gd/crystallography_of_martensite_transformations_in_steels.pdfIn PDF document text
    • http://balazetesu.epizy.com/53674115723.pdfIn PDF document text
    • http://sekijipaladi.epizy.com/kofuxozanudiwerozawodije.pdfIn PDF document text
    • http://xeregolipota.epizy.com/fafavujerejenavenura.pdfIn PDF document text
    • http://guzaxugevogifu.epizy.com/karemisopiwig.pdfIn PDF document text
    • http://biguvuxurezuto.epizy.com/90461328986.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_off0000c890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC890 5484 bytes
SHA-256: 29026392657924ae5a8d09a76d46d1943826fabc08cea46944fe5b6355c30f95
font_01_sfnt_off0000db30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB30 10728 bytes
SHA-256: 2b2fda440959cb1dd7b5fa45d82a6681b0e555cfdd41f454bd8a6ed2fd3c4d3d

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