Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4e4bd3b8f5cf1d9…

MALICIOUS

PDF

64.7 KB Created: 2021-02-18 14:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: edc5176faf63f811756d012192f86d8b SHA-1: d75161200be54a3181f999f25c383f2408b6227b SHA-256: d4e4bd3b8f5cf1d9ffe3f2cb2e87242e18afd02fef348eedef84e41210e03ae1
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jottigo.ru/aws?utm_term=vegan+recipes+for+beginners+book PDF link annotation
    • https://cdn.sqhk.co/misumirotoj/uC7hgAd/64499352951.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416149/normal_5fe10a2eda75c.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/9f71JZy/jeripazijubujomubofasotal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484632/normal_5ff9ccf3ef84c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500201/normal_6026795fca341.pdfIn PDF document text
    • http://mizafejil.iblogger.org/4976541012.pdfIn PDF document text
    • http://giocodigital.fun/why_does_my_cordless_phone_say_check_tel_linegcbos.pdfIn PDF document text
    • http://prizinsta24.site/output_arcade_crack1c999.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367000/normal_5feeb17c24bea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427091/normal_5fd76b9a8ee68.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424036/normal_6014c8a8cae9a.pdfIn PDF document text
    • http://ferobuxanax.iblogger.org/toy_story_forky_colouring_sheets.pdfIn PDF document text
    • http://tewazezila.66ghz.com/91556343513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445743/normal_5fe8fbdf55a2e.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/fukezavazuj/kisigulurenurisaxol.pdfIn PDF document text
    • http://xaralitotido.rf.gd/nezoxotavuvagarusoxo.pdfIn PDF document text
    • http://tagugatukosag.epizy.com/statistical_modeling_by_wavelets.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/jatogujevexetu.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_off0000c27e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC27E 5320 bytes
SHA-256: cc750eedaae1d1bdee833be182ef3d91dc5d986d7a948e8bf489c7c022a52576
font_01_sfnt_off0000d4b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B2 9600 bytes
SHA-256: e81fab522f6348932b48b0e7e1024071dd52a903013de6c77fb0ce16328e0f36