Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab453fe8e9d1a0f…

MALICIOUS

PDF

86.8 KB Created: 2021-02-19 11:46:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 23a856fcf676401b36ac244e21ef1334 SHA-1: e132792de04c4bb51e61dec7c16f1a953fee8bf9 SHA-256: 6ab453fe8e9d1a0f3232361c25b7bae4b85e866f8b5f469b122c99133114da2f
66 Risk Score

Malware Insights

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

The PDF document contains an embedded URL that redirects to a website offering cracked software, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs further supports this assessment. No scripts were extracted, but the overall structure and embedded URI suggest a lure for malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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/wix?keyword=download+adobe+photoshop+cs6+full+crack+mac PDF link annotation
    • https://cdn.sqhk.co/xafiguzi/ict63fp/vuluxasorumanazobiv.pdfIn PDF document text
    • https://cdn.sqhk.co/litonesi/jjOQYgj/91784379130.pdfIn PDF document text
    • https://cdn.sqhk.co/lipetebo/gg6vHc6/forimurevutakumebamabazo.pdfIn PDF document text
    • http://pevojatinolotej.22web.org/womapirisodajumurivilod.pdfIn PDF document text
    • https://cdn.sqhk.co/noviraxat/fjejfJu/dovigorotoz.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/UV2ghEn/cooped_up_wings.pdfIn PDF document text
    • http://murupewobot.iblogger.org/atomic_habits_james_clear_podcast.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/pasawexawinogad/killing_floor_2_demolitionist_guide_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/63560849362.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/calibre_user_guide.pdfIn PDF document text
    • http://poresiz.epizy.com/fivowobokijawobiw.pdfIn PDF document text
    • http://nejuzuwesikodik.rf.gd/7646040488.pdfIn PDF document text
    • http://toxisokipefofo.epizy.com/99987820783.pdfIn PDF document text
    • http://vowukuzu.rf.gd/61513700786.pdfIn PDF document text
    • http://kevawiposiwa.rf.gd/salawikain_at_sawikain_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/mozilla_firefox_browser_pc.pdfIn PDF document text
    • http://filabirora.epizy.com/a_companion_to_archaic_greece.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_off000116ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116AC 5844 bytes
SHA-256: ab91539e7c35f2c3ede2192b69713089daa38fcb1e9361dd50e108d494a90bc6
font_01_sfnt_off00012a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A7C 10420 bytes
SHA-256: cea7cf96722f55de9876042eed4fe424d819e6c6a89b910242ab13d21f2d67c7

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