Malicious PDF — malware analysis report

Static analysis result for SHA-256 529897c6d9763246…

MALICIOUS

PDF

68.9 KB Created: 2021-02-23 02:45:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 648bf98c839291c6c16fc4be70e805b2 SHA-1: b95c7d0f4968dc4658ace210ea91f4e5814de04a SHA-256: 529897c6d976324658ba4ce0ab79cfdb571a0bc8cf39a130bbe4e467286f2d47
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://seumenha.ru/wix?keyword=zepeto+apk+aptoide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4451027/normal_600b4c900dac1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484364/normal_5ff785c191e78.pdfIn PDF document text
    • https://rikekipodoze.weebly.com/uploads/1/3/0/7/130776447/xotiwasasanodenusam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418985/normal_5fe03dcd81b78.pdfIn PDF document text
    • http://dekagexagupeje.iblogger.org/tibuxabipofofukijo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387701/normal_5fcd5e2cd8197.pdfIn PDF document text
    • https://favapebunekef.weebly.com/uploads/1/3/0/8/130874429/6600fafd7e.pdfIn PDF document text
    • https://sorawujij.weebly.com/uploads/1/3/4/6/134671526/26361.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/2727333263.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/51671908421.pdfIn PDF document text
    • https://s3.amazonaws.com/dojivewobasuval/android_studio_3._4_features.pdfIn PDF document text
    • http://vopevufiwi.epizy.com/gakubudufubigokiluta.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/defining_relative_clauses_exercises_intermediate.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/nier_automata_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/us_army_soldiers_creed.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/99895190494.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_off0000d3d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D5 4668 bytes
SHA-256: d91e8c69b0e6fb91625a6d56bf41029cbb725a8c51b8a511958fa069e748db57
font_01_sfnt_off0000e3d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3D4 10240 bytes
SHA-256: 09197bde89a5b5146039dcd5621a0b2fc5c50c8a64df8b501ec12853c9418639

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