Malicious PDF — malware analysis report

Static analysis result for SHA-256 b27d35a53e5e10ee…

MALICIOUS

PDF

77.9 KB Created: 2021-03-06 01:11:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: e156206b1e6d49c7f0c82b4be25a2d84 SHA-1: 8826eaebd591f3565af34a913b9d6f6c49da54a7 SHA-256: b27d35a53e5e10ee39a52bee6815c1e081d62b6e90ab432a895700bc2b660eba
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document contains a large number of embedded URLs, many pointing to disposable domains, suggesting a link farm designed to distribute phishing content or malware. While no scripts were explicitly extracted, the PDF structure and the nature of the embedded links strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://leonvi.ru/award?keyword=how+to+change+a+schlage+electronic+lock PDF link annotation
    • http://ogranifruit.space/bible_gateway_audio_freekwzsd.pdfIn PDF document text
    • http://sejerodetupumil.medianewsonline.com/67278466116.pdfIn PDF document text
    • http://whalesqpa.fun/45537183879o5f7h.pdfIn PDF document text
    • http://skameyki.club/lambda_layers_performancey72ff.pdfIn PDF document text
    • http://fimajixilozile.22web.org/section_14.1_work_and_power_worksheet_key.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/harry_potter_y_la_orden_del_fenix_audiolibro_latino.pdfIn PDF document text
    • http://fakixigulidol.mywebcommunity.org/does_juice_plus_tablets_make_you_lose_weight.pdfIn PDF document text
    • http://fivogudog.iblogger.org/10_examples_of_social_media_platforms.pdfIn PDF document text
    • http://bizivademix.iblogger.org/bhojpuri_gana_hd_video_dj_mein.pdfIn PDF document text
    • http://lunatan.medianewsonline.com/jilenuze.pdfIn PDF document text
    • http://ultra0.space/36670284860m5hz0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://23da7c74-6e14-424a-b22a-901aa35eafb1.filesusr.com/ugd/9cc572_7f980e533bb547109d84e5f8265d28d4.pdf?index=trueIn PDF document text
    • https://d5fd0048-bb8d-45a1-ba21-28d1cb0b7162.filesusr.com/ugd/5e8de6_5ff1ba3a21ff492ebe8f1735cca4a96d.pdf?index=trueIn PDF document text
    • http://zasuwunal.myartsonline.com/what_charities_will_pick_up_used_furniture.pdfIn PDF document text
    • http://danesanifulen.rf.gd/73019230003.pdfIn PDF document text
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_55ac0ed2e5a34888afa62df9e27e6590.pdf?index=trueIn PDF document text
    • https://4454cc88-256b-48ad-9013-c0414c72072d.filesusr.com/ugd/67e251_0b7b670a603f400c95b07f20bb2bfa7c.pdf?index=trueIn PDF document text
    • http://punirasum.rf.gd/perfectly_inelastic_collision_lab_report.pdfIn PDF document text
    • http://sabiwilurase.atwebpages.com/how_to_change_the_code_on_a_schlage_touch_lock.pdfIn PDF document text
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_97528c907ea44c8a81470d5eeacf2c24.pdf?index=trueIn PDF document text
    • https://18cb0a1d-3822-48a5-9ca0-56465202bc9b.filesusr.com/ugd/96564c_ede25dc76cd14ae6a01f753d899ace67.pdf?index=trueIn 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_off0000f4c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C9 5176 bytes
SHA-256: 00f5f073d29a19861e3cff62c1e77313c51091951f7f2bcb24ae87f4c3d9612b
font_01_sfnt_off00010674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10674 10336 bytes
SHA-256: 67f9f6841348208780541365e6a7545f6b51a83abe9cdce473cb442f437986a8

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