Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7aa888aae75cbd…

MALICIOUS

PDF

70.7 KB Created: 2021-03-14 00:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 5149a6d366d69df00015f5a6000d9821 SHA-1: 61e22d5687c58575904e3c70f930e10f5b41e673 SHA-256: fe7aa888aae75cbd615c83d561475f5593c75532a85e4b803d4f1988412ac2ee
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/award?keyword=administracion+financiera+contemporanea+moyer+pdf PDF link annotation
    • http://tramlaweq.online/foperutokonafugodovemeg0unjy.pdfIn PDF document text
    • http://copyright-help-report.com/punaxapuvuwi56a.pdfIn PDF document text
    • http://giwosoto.sportsontheweb.net/16677311854.pdfIn PDF document text
    • http://bumalutaf.iblogger.org/kapiboritusikuzetonipapi.pdfIn PDF document text
    • http://gatowixipeba.mywebcommunity.org/84541939738.pdfIn PDF document text
    • http://suzofovolavuk.scienceontheweb.net/22109103732.pdfIn PDF document text
    • http://kuzojud.66ghz.com/kitchenaid_oven_self_clean.pdfIn PDF document text
    • http://doucheop.xyz/pogozupiboripubidimulogimkpdrn.pdfIn PDF document text
    • https://cdn.sqhk.co/kezulegol/hhcjihe/20967774842.pdfIn PDF document text
    • http://fejofezipekow.iblogger.org/vidufiguxuzetaketu.pdfIn PDF document text
    • http://saletipaja.22web.org/bobiferisosujakexuda.pdfIn PDF document text
    • https://cdn.sqhk.co/nowavutu/jikgcid/botasifur.pdfIn PDF document text
    • http://uspeh.icu/shakespeare_macbeth_act_14nd75.pdfIn PDF document text
    • http://help-copyrighteamservice.com/gixalavavejasetuvaraf0ievc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/284007e6-c5bc-4924-b895-6279967ffcec/4042686795.pdfIn PDF document text
    • https://s3.amazonaws.com/wizomoravazub/sorafobulelazetezagivot.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/hearthstone_arena_helper_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/635be82e-82f9-4b38-b2e8-9b332707d1dc/98847456238.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c36f7a11-a339-417f-ac71-fae47480873e/casio_pcr-t273_electronic_cash_register_8_department_keys.pdfIn PDF document text
    • http://napalujimawoz.rf.gd/21484758323.pdfIn PDF document text
    • http://ziwemasux.myartsonline.com/30370071673.pdfIn PDF document text
    • http://duziroro.myartsonline.com/iata_country_codes.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/veximulelogo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC885 5148 bytes
SHA-256: 170479ab70e4c4481566284c025c382ac9fb94d78f5dc00eac8be44ad30cdd2e
font_01_sfnt_off0000d9eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9EB 10716 bytes
SHA-256: ef6bdc4fb1785fa2b6a655a5942feaec4462820569f38f66c394a118f23c6862
font_02_sfnt_off0000fd2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD2D 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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