Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e70bec40633ccde…

MALICIOUS

PDF

75.1 KB Created: 2021-03-20 19:37:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bc2dc107d9d0cfe02bff32abed11c371 SHA-1: 50a9592cc53a563da8a2f2efcb41a5882e8d87a3 SHA-256: 1e70bec40633ccde625872face42931e102869f1b8ae5e9dd1dfa68c77705438
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://jottigo.ru/aws?utm_term=eureka+enviro+multi+steamer+parts PDF link annotation
    • https://cdn.sqhk.co/perolurowona/icagh4j/1163174001.pdfIn PDF document text
    • https://cdn.sqhk.co/xakelafu/hjt9Lhd/billie_eilish_coloring_book_free_download.pdfIn PDF document text
    • http://wagagawoduzom.iblogger.org/brche_mit_variablen.pdfIn PDF document text
    • https://cdn.sqhk.co/kavonalitego/ghhjjaU/eternity_warriors_4_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/hehggi3/48670131460.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/I9hanhd/jopafurugijetufapuma.pdfIn PDF document text
    • https://cdn.sqhk.co/lunosupi/jqUjic7/70529559447.pdfIn PDF document text
    • https://temabodanifow.weebly.com/uploads/1/3/1/4/131454916/betupebi.pdfIn PDF document text
    • https://taguraridefukal.weebly.com/uploads/1/3/4/4/134446716/5632354.pdfIn PDF document text
    • https://vidawakepedulud.weebly.com/uploads/1/3/4/6/134693911/taxulogisitiwaxob.pdfIn PDF document text
    • http://ersoil.fun/mumigalolarediselorezabxx3nv.pdfIn PDF document text
    • https://cdn.sqhk.co/vemudumuxixu/JidyCib/zapokof.pdfIn PDF document text
    • https://cdn.sqhk.co/jekidase/nLhjGSe/airplane_drawing_transparent.pdfIn PDF document text
    • http://risurevisawibe.iblogger.org/dell_latitude_e6410_bluetooth_driver_download_windows_7_64_bit.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/ohdieyr/quadratic_inequalities_questions_with_answers.pdfIn PDF document text
    • http://espacecmb.xyz/736523408668flst.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/3fd2c624-f1f4-48bb-a8de-6df6cfb17b43/76882776206.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46e3094f-592c-47bb-b254-0d1bc92b35db/cbt_worksheets_for_depression_uk.pdfIn PDF document text
    • http://luwatejanif.epizy.com/eagle_cuda_168_instruction_manual.pdfIn PDF document text
    • http://wijexir.epizy.com/mosekemokonum.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_off0000e814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE814 5048 bytes
SHA-256: a239057ef72879f91a5b8b6cd54cf8e985afe156dc4e7748483c1d4aaebf86ab
font_01_sfnt_off0000f933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF933 11196 bytes
SHA-256: 94460c04369a4ef67365f47da0be93a06b8c4d37fd5691be946a71e8a34647b0

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