Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe87f62165a728ce…

MALICIOUS

PDF

82.2 KB Created: 2021-02-14 12:07:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1ea107a20cfd4f677a2ce41f5802b3a6 SHA-1: b3bc0e4a89462fa9786c802749efad5531e81ecd SHA-256: fe87f62165a728ce98242f4ffac7c6f1f66a532c28a5c640660c24a6609b3a7d
136 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, as malicious and phishing-related. The presence of an SEO redirector link disguised as a free download lure strongly suggests a phishing attempt. While no scripts were explicitly extracted, the PDF structure and the nature of the URL indicate it's designed to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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/123?utm_term=what+grades+are+middle+school+in+korea PDF link annotation
    • http://itali-big.space/khalnayak_mp3_ringtonet9g75.pdfIn PDF document text
    • http://trudogoliya.online/dapudetugetanbri86.pdfIn PDF document text
    • https://cdn.sqhk.co/wefenosefob/hU0hbt8/fall_guys_xbox_1_game.pdfIn PDF document text
    • https://cdn.sqhk.co/walumupo/thfjjbp/words_with_s_h_o_o_t_e.pdfIn PDF document text
    • http://alfa-quest.ru/ib_spanish_ab_initio_textbooksrtx0.pdfIn PDF document text
    • https://cdn.sqhk.co/vedimofaw/jhiigj8/leather_pants_aritzia.pdfIn PDF document text
    • https://cdn.sqhk.co/jifegusewe/XiafKgc/gixusus.pdfIn PDF document text
    • https://cdn.sqhk.co/fosojatesog/idgiUdX/77569718154.pdfIn PDF document text
    • http://termometr-medikal.site/bullet_time_effect_insta360qc1qp.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/W6bp9nO/xijivajexodojod.pdfIn PDF document text
    • https://cdn.sqhk.co/nimabugokofa/jWGjehb/65939158198.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/tabobujimo/wokarozozarakiramona.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/fakomari.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/subedoru.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/40279395234.pdfIn PDF document text
    • http://fupoberisaluz.rf.gd/36165066772.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/85543494213.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/annabelle_creation_movie_in_tamil_free.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10565 5432 bytes
SHA-256: 7b09028fa0d41ad915634c59682ff9bd6cdaa74a0839aaf9fc48a0676e713eb2
font_01_sfnt_off000117bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117BC 10464 bytes
SHA-256: d200ea5c494eccbe6b91d1e21c340ad4c8d4731eb950e7e8e22fe3ec3836599c

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