Malicious PDF — malware analysis report

Static analysis result for SHA-256 36688fa06466d795…

MALICIOUS

PDF

69.3 KB Created: 2021-02-13 06:47:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 02b424307a5ece4618f5493a38e28558 SHA-1: 7fb52f5c3cb942835d054070f48c03acfa35fbba SHA-256: 36688fa06466d7954c0c4c2df987c0d21f292c792c0369a8862c8db5dbbc54ad
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/wix?keyword=ors+racks+direct+closed In PDF document text
    • https://wuliwedifa.weebly.com/uploads/1/3/4/7/134753749/4012308.pdfIn PDF document text
    • http://reduslim-italy.site/79809226272bk73.pdfIn PDF document text
    • http://kungfumalibu.com/casera_pressure_cooker_manual0cejw.pdfIn PDF document text
    • http://casbah2point0.com/1010_block_puzzle_game2bpwo.pdfIn PDF document text
    • http://reawont.online/mufivogoninotadejujazxvprt.pdfIn PDF document text
    • https://zojubexetiw.weebly.com/uploads/1/3/5/3/135316795/20cd4e41857a598.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407804/normal_5fc9194604ad6.pdfIn PDF document text
    • http://creditscorehelp.info/25536803647mw7ho.pdfIn PDF document text
    • https://nufapapezo.weebly.com/uploads/1/3/0/9/130969462/8094137.pdfIn PDF document text
    • http://notdull-eng.online/eset_smart_security_trial_keysy2cvc.pdfIn PDF document text
    • http://silver35.ru/vasudevan_biochemistry_freeyy0sn.pdfIn PDF document text
    • https://cdn.sqhk.co/makafabakuna/sQjeFja/airplane_window_mobile_wallpaper.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408983/normal_5feff90ad44ec.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/jaxogomuwa.pdfIn PDF document text
    • https://jadilojapup.weebly.com/uploads/1/3/5/3/135313437/e69d892def536a2.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_off0000cf38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF38 5024 bytes
SHA-256: 68a3db017194bfdd4986f030cc1faef4d1a9654aaf8bfe094b6028ae2d97ebde
font_01_sfnt_off0000e058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE058 12568 bytes
SHA-256: fa5505025de5eb02f889d11d6f1224d656ab5a8ed033c8305f4cf71915c6f141