Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89ba6aa0171acaf…

MALICIOUS

PDF

72.0 KB Created: 2021-02-25 06:48:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b82c29be04983dceb1784f115c2b264c SHA-1: 24bf4f0f6b14182593013a3bde11059d6099e9da SHA-256: e89ba6aa0171acaf3708ac1a1be8e3ca5c08ac5db7feb2815f2ec85b6378d846
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/award?keyword=7+communication+principles In PDF document text
    • http://xuzejomuxide.22web.org/jain_bhajan_lyrics.pdfIn PDF document text
    • http://jujudinopuloxam.22web.org/biology_lab_report_discussion_example.pdfIn PDF document text
    • http://healthytrands.com/asia_spinal_assessment0wbk9.pdfIn PDF document text
    • http://winelorasagi.22web.org/kidde_battery_operated_combo_smoke_and_carbon_monoxide_alarm.pdfIn PDF document text
    • https://lupawepenotude.weebly.com/uploads/1/3/1/6/131606523/sizujufagibumasate.pdfIn PDF document text
    • https://tunoritusaw.weebly.com/uploads/1/3/5/3/135328070/wolobe_kadefemones.pdfIn PDF document text
    • https://faberumul.weebly.com/uploads/1/3/0/7/130739640/9183718.pdfIn PDF document text
    • https://zogeliwev.weebly.com/uploads/1/3/4/3/134353139/4393408.pdfIn PDF document text
    • https://mevavenepid.weebly.com/uploads/1/3/1/6/131637679/regusoruz_wekabeteja_jubiposesesid_wojakepol.pdfIn PDF document text
    • https://pobufulali.weebly.com/uploads/1/3/4/4/134494274/6104160.pdfIn PDF document text
    • http://legalvictory.group/xizotakopemewugenowiwu5b7n8.pdfIn PDF document text
    • https://rukagevilatixa.weebly.com/uploads/1/3/1/6/131608017/5cb13.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zenujasope.epizy.com/79147865931.pdfIn PDF document text
    • http://wavedada.epizy.com/android_snackbar_with_button.pdfIn PDF document text
    • http://sibexelopuni.epizy.com/37557213487.pdfIn PDF document text
    • http://tafoboverel.epizy.com/bewezagojekaxokomap.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_off0000dddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDF 5064 bytes
SHA-256: 00742b14da81b62f86367b4685a4675c7d1730c0e910e33794705a9975ac528b
font_01_sfnt_off0000eefd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEFD 10672 bytes
SHA-256: d59f649f6917c51923886f5ee0f67514c3bb44621a1b5738efbfe2dd3f702b08