Malicious PDF — malware analysis report

Static analysis result for SHA-256 07a2075cc7aa1574…

MALICIOUS

PDF

74.4 KB Created: 2021-02-15 08:56:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 59eb6dd6e867627e487168842d225f34 SHA-1: 758228405f27a4c7ba4e9ee0b68687eac26e7c7b SHA-256: 07a2075cc7aa1574dc65347ebff6a28856f3915eea338fc521af3f79e23b34fa
244 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
  • 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/123?utm_term=brave+new+world+vs+1984+comic In PDF document text
    • https://cdn.sqhk.co/zesonixiv/Yheushd/92222154424.pdfIn PDF document text
    • https://gumopaxegekugod.weebly.com/uploads/1/3/4/0/134018731/ce328fb70.pdfIn PDF document text
    • https://lajexupizad.weebly.com/uploads/1/3/0/7/130775806/bujawizagore.pdfIn PDF document text
    • https://dizogesutupini.weebly.com/uploads/1/3/4/6/134631076/tovulatupijeni.pdfIn PDF document text
    • https://cdn.sqhk.co/zexetiminav/gj1U8sO/multiple_qr_barcode_scanner_pro_apk.pdfIn PDF document text
    • http://metazoaapc.fun/android_phone_under_3000_pesosya3nw.pdfIn PDF document text
    • https://cdn.sqhk.co/suwajipufo/hBkRn4P/monster_high_sticker_zine_sticker_packs.pdfIn PDF document text
    • https://ruzuxopamekegi.weebly.com/uploads/1/3/4/7/134748505/sedowoxupepiw.pdfIn PDF document text
    • https://cdn.sqhk.co/sodonojoj/gj5hjha/bkash_apk_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/wevafofed/V4zsihl/57111478117.pdfIn PDF document text
    • https://nuzozixajalupik.weebly.com/uploads/1/3/0/7/130739607/tafutapinedinok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379964/normal_6004111d371e2.pdfIn PDF document text
    • https://nukukenodaxuw.weebly.com/uploads/1/3/1/3/131384044/702f67.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/Jdgeehc/faxozenolixikajuma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381547/normal_6027668b49f19.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e2de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DE 5776 bytes
SHA-256: 1337231329c1c9a11a1ea1ee4ea24affe80aadc46e4d50910eb459edfa882746
font_01_sfnt_off0000f68e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68E 10880 bytes
SHA-256: 14f7d3e7f63e7188c229673aa71b73a0cb536c787bb60b8dec9532d9c752aa9d

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