Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89136b00a518257…

MALICIOUS

PDF

63.6 KB Created: 2021-02-15 03:47:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 12f2cea87493e05dcb08f492cea07c79 SHA-1: ad70d43598032aad10a1bc9571435114b2b15400 SHA-256: e89136b00a5182579bb1332bd53604bbb089820659e417522f718b421a96c042
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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/wix?keyword=everyday+math+grade+6+unit+5+answers In PDF document text
    • http://instapodarok.site/45532731931y8qqe.pdfIn PDF document text
    • https://bunojero.weebly.com/uploads/1/3/0/8/130874162/39a9e9fad.pdfIn PDF document text
    • http://constructionhouse.info/why_is_waiting_for_godot_called_an_absurd_playq27i2.pdfIn PDF document text
    • https://palejuzuz.weebly.com/uploads/1/3/5/9/135959315/lodadepikaxoza_foxabajej_xepafa.pdfIn PDF document text
    • https://wajovojov.weebly.com/uploads/1/3/4/6/134652085/butegugagamotifufop.pdfIn PDF document text
    • https://vonosupaxeme.weebly.com/uploads/1/3/0/7/130740497/gowofopoli.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387589/normal_601604727ca6f.pdfIn PDF document text
    • http://you-bestshop.xyz/zijajele9f1e.pdfIn PDF document text
    • http://biomanix.best/pepirovebivitasapifi0262b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375195/normal_6015c6913d9db.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/vaxebisapesi/org._apache._hive._hcatalog._data._jsonserde_jar.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/block_breaker_deluxe_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/popujavug.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_off0000bc81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC81 5696 bytes
SHA-256: 344850eb85613ce804ddbc26b405ec2453fefa58026f42fca3486f8ed6b90a84
font_01_sfnt_off0000cfdb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFDB 9928 bytes
SHA-256: 314320e29a1f46cb42ac5bd52f94d74339257a2e846ce05a41ec7b614f14b7d1