Malicious PDF — malware analysis report

Static analysis result for SHA-256 930c5131071b8482…

MALICIOUS

PDF

72.6 KB Created: 2021-03-18 00:38:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2f8a4acad2c8e004a13456722d995e40 SHA-1: fbcf0a89f014cd0e2e6745283590f7c0aee762ac SHA-256: 930c5131071b84821af08ca03715e418e4a2f1f8a6cf9737a39565fc10e16e52
196 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://midufefew.ru/wix?keyword=house+of+the+faun+plan PDF link annotation
    • http://pegixudovojap.iblogger.org/46387811848.pdfIn PDF document text
    • http://moxokivotalunuz.iblogger.org/does_canon_e470_support_airprint.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421468/normal_601d242a7a574.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380383/normal_5fd38cab292ab.pdfIn PDF document text
    • http://maxomafegafo.22web.org/duchess_of_malfi_quotes_act_1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402267/normal_5ffeabf55aa0e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jatujij.rf.gd/61247040771.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/zatufakazafazivijapofovep.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/grade_2_math_curriculum_bc_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/icloud_unlock_software_2018_free.pdfIn PDF document text
    • http://rimalapotozuf.epizy.com/pf_non_employment_certificate.pdfIn PDF document text
    • https://041aa876-b65b-432c-96c0-58c8b295a4e4.filesusr.com/ugd/90d19e_20e410a248fc4d39b149157d3f4aecdb.pdf?index=trueIn PDF document text
    • https://e8b83640-91e4-44a0-a69f-c2468797902f.filesusr.com/ugd/ee4a13_f2ca7a4c400c45598c8889c43d2a77ac.pdf?index=trueIn PDF document text
    • http://towupew.epizy.com/jonghyun_before_our_spring_piano_sheet_music.pdfIn PDF document text
    • http://zamewoj.rf.gd/34773434291.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/can_you_take_realtor_classes_online.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/dodubofexemerenovuluk.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/desperate_billionaire_song_free.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_off0000e284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE284 4856 bytes
SHA-256: c9d570618dba7c7b8e55ef37b09f980fedd50dd412220c55dd578b4487aaf128
font_01_sfnt_off0000f30b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF30B 10096 bytes
SHA-256: 5919633c594e611925f5afb36e7b8fa19612c007b891bafb385d8ab5a8191607

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