Malicious PDF — malware analysis report

Static analysis result for SHA-256 69f79933ba63d8e2…

MALICIOUS

PDF

68.5 KB Created: 2021-02-23 11:10:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b2ba5edcac2a20262bf31354a1a4cbf5 SHA-1: ce62f6f0d60d1c0a5c4bf01c47264b4dcde903fd SHA-256: 69f79933ba63d8e2cc55ded0431faf08d1aaec8561a4e46c95c061054236d8ab
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • 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.
  • 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/wix?keyword=santo+es+el+senor+letra+y+acordes In PDF document text
    • http://kismykeitio.best/rexizexidopilisupoxg40j6.pdfIn PDF document text
    • https://cdn.sqhk.co/duwefetufe/bgitmlo/download_tubemate_video_downloader_apk_2._2._4.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedajoze/aWidhc4/rofelutefezimusajepoxo.pdfIn PDF document text
    • https://cdn.sqhk.co/pamavunawi/ijHghhg/full_contact_teams_racing_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wavudasawete/Ehihhy1/strategic_management_examples_ppt.pdfIn PDF document text
    • http://216tilford.com/susidaosc9.pdfIn PDF document text
    • http://repair-kompov.ru/kokegajatadiko28.pdfIn PDF document text
    • http://ideaita.fun/toyota_camry_for_sale_in_gauteng_olxj4xg2.pdfIn PDF document text
    • http://toppiksnack.xyz/tojusupilesijovipuxtuhyy.pdfIn PDF document text
    • https://rowagikej.weebly.com/uploads/1/3/4/6/134678960/vidutagejawa.pdfIn PDF document text
    • http://tinonijo.iblogger.org/47231139593.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/hkiigkv/stupid_zombies_3_free_download_for_pc.pdfIn PDF document text
    • http://kivedunorujuw.66ghz.com/bajibuzifotasopil.pdfIn PDF document text
    • https://likudone.weebly.com/uploads/1/3/4/6/134681098/tipurarilor.pdfIn PDF document text
    • http://strita.space/javizutisesikimbl1rj.pdfIn PDF document text
    • https://cdn.sqhk.co/jefigujaxev/jgBaRfN/unnatural_selection_book.pdfIn PDF document text
    • https://cdn.sqhk.co/xewafazuk/ct9h3fV/board_games_for_5_year_olds_argos.pdfIn PDF document text
    • http://jilet1.club/tagekotixulugcqrd.pdfIn PDF document text
    • https://cdn.sqhk.co/zewumabigige/dheOwC8/1402153458.pdfIn PDF document text
    • http://hamlikjorettoop.ru/books_on_mind_control_techniquesaxc2g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zifopodisinuri.rf.gd/sofazasosis.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_off0000c202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC202 5136 bytes
SHA-256: a214ee169b28c296987f5a9c403e922a39a0a8273e6e6fe460ff5cc3440b2361
font_01_sfnt_off0000d388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD388 16232 bytes
SHA-256: 36d90a15239682b9888086a601926eff10840076431226f61c15b2f674df0e32