Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa48441e357a740…

MALICIOUS

PDF

68.9 KB Created: 2021-02-28 10:50:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b60279cd56a432ce0a4c65b460295fd4 SHA-1: e864dcd9e1e836ad532d8ab47f3c02356007ab46 SHA-256: 1fa48441e357a740e10048523d325a6f2755b989fd6f49aaef56757a973be33c
186 Risk Score

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
  • 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.
  • 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://nipisod.ru/award?keyword=rain+dial+1200+manual PDF link annotation
    • https://cdn.sqhk.co/wakewafo/fZGM4EJ/d_day_normandy_movie_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/jovakuki/hgZNMjd/33745651673.pdfIn PDF document text
    • https://cdn.sqhk.co/gajerivab/ijihWjc/81823625959.pdfIn PDF document text
    • http://termometr-medikal.site/29850483099r94sr.pdfIn PDF document text
    • https://jixatazibasuv.weebly.com/uploads/1/3/4/4/134402985/pigurifobozoxil_rutukitomim_rosilogomej.pdfIn PDF document text
    • http://ziwigosopijulal.mygamesonline.org/7394425685.pdfIn PDF document text
    • http://torchland.xyz/30510491367xw2qt.pdfIn PDF document text
    • http://rubewox.sportsontheweb.net/womejisofepob.pdfIn PDF document text
    • https://cdn.sqhk.co/mugetawelumi/mAheos7/43379015500.pdfIn PDF document text
    • https://rekazisiw.weebly.com/uploads/1/3/0/8/130874265/webutoroxixaremamog.pdfIn PDF document text
    • http://org-fruit.space/96663623858w0ty0.pdfIn PDF document text
    • http://lumufurisazela.mywebcommunity.org/sekaxobugeju.pdfIn PDF document text
    • https://cdn.sqhk.co/girasufu/hbjbggp/smart_tv_50_4k_120hz.pdfIn PDF document text
    • https://difomojixi.weebly.com/uploads/1/3/4/3/134319012/685079.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/3mCX4jh/fall_guys_ultimate_knockout_ps4_split_screen.pdfIn PDF document text
    • http://sevowina.medianewsonline.com/36126996391.pdfIn PDF document text
    • https://sadavofabuloxus.weebly.com/uploads/1/3/5/3/135316226/1479023d6cf.pdfIn PDF document text
    • http://sukojas.22web.org/reorder_bookmarks_chrome_android.pdfIn PDF document text
    • https://cdn.sqhk.co/xolafunodo/Ohfiigc/23493124272.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zevusup.atwebpages.com/how_to_calculate_compound_interest_over_time_in_excel.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_off0000d1ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1BA 5028 bytes
SHA-256: 4586e56c8f1a7e55c88611c0db71f656dbe2a89106aff08359f0b9b10e45a5cd
font_01_sfnt_off0000e2cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CC 10424 bytes
SHA-256: 008980df2f8d15ddf9cefc5547f389ad4f31c6da8fc2400794f25aff6724bb57

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