Malicious PDF — malware analysis report

Static analysis result for SHA-256 244f99079f347cb2…

MALICIOUS

PDF

73.1 KB Created: 2021-02-28 06:48:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d8fc59ab379298543d78dc8695a577ee SHA-1: 3c737f9780d3f90640f2fd5f7542de883866de24 SHA-256: 244f99079f347cb20f2542a14f299966b781bffd8e845ba7e78000c8ea036971
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://jacksth.ru/award?keyword=diary+of+a+wimpy+kid+14+book PDF link annotation
    • http://avbox.org/wupiwj7rzc.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/Cowighg/flip_master_game_y8.pdfIn PDF document text
    • https://cdn.sqhk.co/miviterul/jjghht2/jewel_star_3_free_download_for_pc.pdfIn PDF document text
    • http://pshcomonhere.xyz/58878863105itv4f.pdfIn PDF document text
    • http://svoytrylend.xyz/avr_microcontroller_and_embedded_systems_solutions_manualafsp5.pdfIn PDF document text
    • http://euromarket.pro/devojiwajevofobogusezaaja9.pdfIn PDF document text
    • https://zofazozudu.weebly.com/uploads/1/3/0/7/130739697/b64eca.pdfIn PDF document text
    • https://zisatusomet.weebly.com/uploads/1/3/4/8/134872515/zupuzobuvu_mumenu_bafuroteboxex_sebuju.pdfIn PDF document text
    • https://sakurulemiba.weebly.com/uploads/1/3/0/9/130969926/9853090.pdfIn PDF document text
    • https://poxanada.weebly.com/uploads/1/3/1/4/131483305/ff92fa941ad432e.pdfIn PDF document text
    • http://sajiwurejedetu.sportsontheweb.net/el_hobbit_2_castellano_mega.pdfIn PDF document text
    • http://jamotovoxut.mywebcommunity.org/17580735321.pdfIn PDF document text
    • http://tidirakozodawon.getenjoyment.net/57439087626.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/gifiz/what_does_sanger_rainsford_look_like.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/kixanerozojuvuf.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/high_level_disinfectant_solution_log_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/nordictrack_commercial_1750_treadmill_best_price.pdfIn PDF document text
    • http://niwuzij.rf.gd/83818365693.pdfIn PDF document text
    • https://s3.amazonaws.com/sowewazulejewi/baby_shark_remix_song.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_off0000deda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEDA 5516 bytes
SHA-256: f16606617f822c2ad6f2f9be70398482993b58b64e549a9e49038cf02a36a850
font_01_sfnt_off0000f1ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1AE 10984 bytes
SHA-256: 21d83252765ce6262305389fe6dc1dd707a40720d7292ca7cf00e89abd846840

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