Malicious PDF — malware analysis report

Static analysis result for SHA-256 22c2ba1b72ca8e2e…

MALICIOUS

PDF

79.2 KB Created: 2021-05-02 08:06:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: a064c458b9dfa258c9a432e88cee5bf8 SHA-1: d7402b87bf03156abc261c2bf162cfbdceb6f683 SHA-256: 22c2ba1b72ca8e2e3ffb85c9de861dabf4b06c72ad4591b6383f71c004dd00a0
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by multiple heuristics and an ML classifier, with ClamAV detecting it as a phishing trojan. The document contains a large number of external links, many of which are suspicious and likely intended to redirect users to malicious content or phishing pages. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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/strik?utm_term=nikon+f5+user+manual+download PDF link annotation
    • http://islta.fun/what_is_wilderness_first_aidnlgr5.pdfIn PDF document text
    • http://detonic-de.website/lagimamejirizusubitoxuz5jxhy.pdfIn PDF document text
    • http://vizit.store/one_day_my_soul_just_opened_up_audiobook8jiwz.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/IGM6jhh/dazidemofadame.pdfIn PDF document text
    • http://harkateine.fun/88561251998u3ym2.pdfIn PDF document text
    • https://cdn.sqhk.co/mogujawogo/geu3Thi/fortnite_season_10_challenges_cheat_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/zimamoko/bujeji0/2492499323.pdfIn PDF document text
    • https://cdn.sqhk.co/faxixuwako/jdiggdx/zombie_hunters_2_online.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/eOjdD70/83376172910.pdfIn PDF document text
    • http://mebets.xyz/575906828824v165.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/38f25902-b0e9-4155-84dc-c0b8f55700ff/ski_doo_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/26593126760.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/lesaxa.pdfIn PDF document text
    • https://ca483b97-61ac-4196-bca0-6b249c18eca9.filesusr.com/ugd/b27199_9552ef1fa0834899acdc58ef9d328e5c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/93539738040.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/aspirin_structure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06015221-c040-444e-8af8-5b8e4f8b79d6/sefer_raziel_hamalakh_english.pdfIn PDF document text
    • https://f8071fb1-33dc-4bb9-9fe9-292e0ca0d861.filesusr.com/ugd/253000_0b327c706efa4a70b6dadedab52f53b0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/sarizef.pdfIn PDF document text
    • https://484a0fbd-04e0-416f-b335-41eb3f66808b.filesusr.com/ugd/228afb_6838029e0958490b8a70aa00132737c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lulelepese/28529005039.pdfIn PDF document text
    • https://s3.amazonaws.com/borokegujuzero/32631877529.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_off0000f823.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF823 5304 bytes
SHA-256: 71504bd872d2715bda6f10b5b427b95138cda21c2ec055d755b5ddc64b5688a6
font_01_sfnt_off00010a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A33 11032 bytes
SHA-256: 9d3ace9f5ec3cf868d01d1da75d365ff99f37ea318eb721bc0729eac7b434ece

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