Malicious PDF — malware analysis report

Static analysis result for SHA-256 40017e50c00ac589…

MALICIOUS

PDF

68.6 KB Created: 2021-02-11 19:48:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9e539d6e73a2ef6359a426534a0ef7d5 SHA-1: 88b962b11949bea8728e9f07016cfb43eebf7bf6 SHA-256: 40017e50c00ac589917a9378b8ef7caf1634aba7ee6890c521dcf3f972e6b0da
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://bologen.ru/wix?keyword=fifty+readings+in+philosophy+pdf PDF link annotation
    • https://gemexufata.weebly.com/uploads/1/3/0/7/130739895/wuzezalolobujiret.pdfIn PDF document text
    • https://cdn.sqhk.co/ronofumito/ifEifR6/kubazojilegoxelewe.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxukulalodi/jfYidUt/lowakutovatef.pdfIn PDF document text
    • https://cdn.sqhk.co/novozefox/aiilbv6/hair_clipper_prank_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/ehicjbL/regal_cinemas_stockton_holiday_8.pdfIn PDF document text
    • https://fojaxekixuwid.weebly.com/uploads/1/3/4/7/134743661/31f0f9b.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/cggchbA/27514528100.pdfIn PDF document text
    • https://cdn.sqhk.co/livukigelo/eibp7ij/dukixem.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/gZpF5al/ear_doctor_specialist.pdfIn PDF document text
    • https://favigexa.weebly.com/uploads/1/3/0/7/130738696/122934.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/wuxupewu/ukulele_chords_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/email_extractor_lite_1._6_free.pdfIn PDF document text
    • http://tupanukaxigazit.epizy.com/science_reading_comprehension_passages_middle_school.pdfIn PDF document text
    • http://wekolaxoretewov.epizy.com/afterbirth_plus_cheat_engine_sheet.pdfIn PDF document text
    • http://wogosozado.rf.gd/duracell_procell_aa_datasheet.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_off0000cfe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFE6 5360 bytes
SHA-256: 955a1a13e222add1b2d02b84deb56cd8b55ecde591d637eb8ba925331cf09d20
font_01_sfnt_off0000e231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE231 10360 bytes
SHA-256: 78d36a7cdbb918bd93cacb29b64f1d59fa9c77525f60b6688d693d6b4271f066