Malicious PDF — malware analysis report

Static analysis result for SHA-256 48996017d980262e…

MALICIOUS

PDF

73.4 KB Created: 2021-01-16 08:06:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: eefc29d595001bb8cf05e71aebac61b8 SHA-1: b94815cc5ace8a1a57492b7a69b60e43c5027d0c SHA-256: 48996017d980262ec4c2f9afeb909ff6da52083393086293fd4dd0deaac392cd
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://traffking.ru/wb?keyword=peacemaker%20movie%20helicopter In PDF document text
    • https://cdn.sqhk.co/dajebala/Lu9ujfZ/84319977154.pdfIn PDF document text
    • https://site-1176192.mozfiles.com/files/1176192/hd_shark_attack_3d.pdfIn PDF document text
    • https://site-1195763.mozfiles.com/files/1195763/59478686648.pdfIn PDF document text
    • https://cdn.sqhk.co/fipimomozuk/hYHAhcw/jiwomojotijewota.pdfIn PDF document text
    • https://vizomitula.weebly.com/uploads/1/3/4/2/134266598/2557347.pdfIn PDF document text
    • https://cdn.sqhk.co/buzusodova/ahMgijb/33606261051.pdfIn PDF document text
    • https://cdn.sqhk.co/kigifadarija/hgie1ab/15059613053.pdfIn PDF document text
    • https://site-1188771.mozfiles.com/files/1188771/adenine_always_pairs_with_cytosine.pdfIn PDF document text
    • https://site-1176996.mozfiles.com/files/1176996/emulateur_application_android_en_ligne.pdfIn PDF document text
    • https://kazagito.weebly.com/uploads/1/3/4/6/134665665/libemazaku.pdfIn PDF document text
    • https://pewoxunoxosizix.weebly.com/uploads/1/3/4/3/134318290/piput_bowok_lexivuwe_livajonafola.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/xuzed/suzebibewujiwalopiro.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/kosukanasot.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/zudak.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/karalumesadi.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_off0000e134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE134 5120 bytes
SHA-256: 96cab1f886f56d006ddb0f7f1a06820551411c26735fc845050c1f8d0cfb052a
font_01_sfnt_off0000f27f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF27F 11788 bytes
SHA-256: ea146f021679a49c67495bac576dbdc71988d460393464878a731143ddbae281

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