Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b4816e91278a9f8…

MALICIOUS

PDF

73.7 KB Created: 2021-06-08 08:21:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 88eb4b59c901f560d625b52f225d7b96 SHA-1: 4a875b0a12f6a515e08602d73997fe3f42498e79 SHA-256: 9b4816e91278a9f85fb90e142f477c9ed05ae01fc0f905106fceba9bc45021c5
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is classified as malicious, likely a phishing lure. It contains numerous external links, with one prominent URL pointing to a page about a Discord mobile microphone issue, suggesting a pretext for the user to click. The PDF structure and embedded content indicate it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://oniceh.ru/pbw?utm_term=why+isn%2527t+my+mic+working+on+discord+mobile PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388407/normal_5fdea0018720c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_6037bfb875efc.pdfIn PDF document text
    • https://zosonokabawim.weebly.com/uploads/1/3/4/3/134316026/e31cecd8.pdfIn PDF document text
    • https://rubuvewoxuvima.weebly.com/uploads/1/3/4/8/134873715/tagajeritemif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480905/normal_5fdf5d8dce578.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469631/normal_604b1e234fe48.pdfIn PDF document text
    • https://vewejefimubi.weebly.com/uploads/1/3/4/1/134108794/4b2650cc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428334/normal_604334015648b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483608/normal_604f84f485a56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409244/normal_5fe18ccc0492b.pdfIn PDF document text
    • https://jamibada.weebly.com/uploads/1/3/1/1/131164428/fdb3c677151.pdfIn PDF document text
    • https://wevepoguf.weebly.com/uploads/1/3/4/7/134717949/bajatoza_sitajibiwis_buwimazibeg.pdfIn PDF document text
    • https://wavoxodasamemat.weebly.com/uploads/1/3/5/3/135348105/gemifaw-samidadoposeken-bulobuduvozarux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407301/normal_6023ef7326718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406191/normal_60138a1a1e136.pdfIn PDF document text
    • https://gabavogafev.weebly.com/uploads/1/3/4/0/134000006/2915468.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/25538a36-299a-4e69-b618-553553daa4ad/25409702984.pdfIn PDF document text
    • http://xinunubaz.pbworks.com/f/fadebirekuwojorikoze.pdfIn PDF document text
    • http://vifogajo.pbworks.com/w/file/fetch/144523170/xitafotabigegedok.pdfIn PDF document text
    • http://kufugaref.pbworks.com/w/file/fetch/144838050/what_does_a_tiger_represent_in_the_bible.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5007eeaa-f9a0-4db0-8206-01979382667a/genie_learn_code_button_broken.pdfIn PDF document text
    • http://nugewil.pbworks.com/w/file/fetch/144612648/zimet.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_off0000e254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE254 5588 bytes
SHA-256: 196b0c5ce6e4a89303654e54f6668c037c1db88aca29eecdefd4b65418810d9e
font_01_sfnt_off0000f55a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55A 10556 bytes
SHA-256: 26b531101eb8d7fe36f0a5c2c59491dbd4112ec8b8848395f3f138ce6e58f523

Open this report in the interactive analyzer, or submit your own file for analysis.