Malicious PDF — malware analysis report

Static analysis result for SHA-256 22fd96dbe7c1232a…

MALICIOUS

PDF

67.3 KB Created: 2021-02-23 17:13:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fa8c8648ee76a1a35240646f4f2f8551 SHA-1: a39dfa2d1de8211d31d44b83df0ade5255bb3114 SHA-256: 22fd96dbe7c1232aec1531bd066a57385267937731a5713b0f4623243bb3d2d7
254 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to a redirector URL associated with phishing and SEO link farming. The primary malicious URL identified is https://crophysi.ru/strik?utm_term=how+to+use+remote+control+for+tv, which is flagged as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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.
  • 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://crophysi.ru/strik?utm_term=how+to+use+remote+control+for+tv In PDF document text
    • https://wamogipoko.weebly.com/uploads/1/3/0/7/130739383/ce5b2ab.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/toge6u0/adults_coloring_book_online.pdfIn PDF document text
    • https://cdn.sqhk.co/lajefage/2WjeHhf/bbc_pandemic_history.pdfIn PDF document text
    • https://jenifamizoj.weebly.com/uploads/1/3/5/3/135319667/xifomaxiji.pdfIn PDF document text
    • https://cdn.sqhk.co/posebozej/UgSCAjg/29405816600.pdfIn PDF document text
    • http://kagivumuro.iblogger.org/femobizi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/fadedosi/video_cutter_free_for_ubuntu.pdfIn PDF document text
    • https://s3.amazonaws.com/defujo/aeroflex_standard_sheet_insulation.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/grade_9_math_curriculum_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/daniwodug/contact_fedloan_servicing_by_phone.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/jiviwafajujalutiwot.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/tabla_periodica_a_color.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/losuder.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/paradise_coldplay_violin_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/83907735700.pdfIn PDF document text
    • http://vijanemafe.rf.gd/les_pieces_de_la_maison_vocabulaire.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/swarm_simulator_android_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bdb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDB7 4764 bytes
SHA-256: 69e5e3c7e351ae5ee1f1f6db9c8c6eb9e0b6fe7cb015aad85585f75aad4fd397
font_01_sfnt_off0000cdeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDEB 10596 bytes
SHA-256: 15ed97e858f2f98000680a7d1f8927083b2432194dee4aaecbd937c12b5a1a3f
font_02_sfnt_off0000f23e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF23E 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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