Malicious PDF — malware analysis report

Static analysis result for SHA-256 2057865f3b63c341…

MALICIOUS

PDF

356.8 KB Created: 2022-03-05 12:15:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-20
MD5: d45a5fa130b5551ecaedc0b02abc7fa7 SHA-1: b3ca78de7ccdb3118c3331c59257c7c92c077c04 SHA-256: 2057865f3b63c341f9f8c61eb36b6d6fe6f2d5c257f5d04dde975f78f6b1a714
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body and extracted URLs suggest a phishing lure, specifically using a fake 'answer key' to trick users into downloading a malicious PDF. The presence of multiple links pointing to compromised WordPress uploads and SEO redirectors further supports this phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9055

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/579accd0aee0c61965acaac47ed1863d/zaxopegigogurujiva.pdf In PDF document text
    • http://csc-028.com/userfiles/file/20220303044722_v51nla.pdfIn PDF document text
    • http://arborspringsforestry.com/img/files/7840415015.pdfIn PDF document text
    • http://mega-treid.com/userfiles/files/25457224729.pdfIn PDF document text
    • http://cuborh.com/natelinhanew/js/ckfinder/userfiles/files/laletakivixula.pdfIn PDF document text
    • http://npi-management.com/ressource/site-image/files/mijofuzujotizarilusuva.pdfIn PDF document text
    • http://greenld.com/userfiles/35371564169.pdfIn PDF document text
    • https://biomisszio.baritz.hu/tmp/gofim.pdfIn PDF document text
    • http://investinwielkopolska.pl/application/lib/ckfinder/userfiles/files/lemolenebeteve.pdfIn PDF document text
    • https://balmbeach.hometeamcorp.com/images/usr/jibuzagiselokamerap.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621bc1f93fc9a---naretoxidizi.pdfIn PDF document text
    • http://www.huescalamagiaenfotos.com/userfiles/files/63865175720.pdfIn PDF document text
    • https://biblioteka-koneck.pl/ckfinder/userfiles/files/70347006312.pdfIn PDF document text
    • https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/dad180f4d3aa01ebae86805ad54a6cf5/xizezofivazosoj.pdfIn PDF document text
    • http://thuonghieutoancau.vn/uploads/files/gogozevixoxibaredos.pdfIn PDF document text
    • http://puisan.ru/uploads/file/roxowufo.pdfIn PDF document text
    • https://pontus-sd.stiv.bg/uploads/file/49201063737.pdfIn PDF document text
    • http://jumpinfit.it/userfiles/files/kuzew.pdfIn PDF document text
    • https://norin.co.za/XSRYdR1H?utm_term=rrb+alp+answer+key+17+august+2018PDF link annotation
    • 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00052292.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00052292.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00052292.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52292 11344 bytes
SHA-256: 080d65640104ddd1ca561ffbad68f64ea89ab095dd99ff21a3681a02fd0fbf98
font_01_sfnt_off00053d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53D77 17792 bytes
SHA-256: 929fac8e22b46f68290a712948c841fbe3d792b04d37ea286e3babe6d4bc2787
font_02_sfnt_off00056bdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56BDD 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9