Malicious PDF — malware analysis report

Static analysis result for SHA-256 29268a3b42c0784b…

MALICIOUS

PDF

82.8 KB Created: 2021-03-09 01:48:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: be5bf89938e2f9f0539d4556efdcda67 SHA-1: a0def0a6e46d15dcb5ed3dc021bf1601e2f40d88 SHA-256: 29268a3b42c0784be42ff5120ab7f6165b5a8d0299ad84279bbaac3f66b63190
184 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged the PDF with high confidence. The document body, although heavily obfuscated, suggests a lure related to 'sbi internet banking form pdf download', implying a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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
  • 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 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://dafemum.ru/award?keyword=sbi+internet+banking+form+pdf+download In PDF document text
    • http://samafutanub.mypressonline.com/40k_8th_edition_tau_codex.pdfIn PDF document text
    • http://kafalukuwemi.mygamesonline.org/kidepet.pdfIn PDF document text
    • http://olymp-trade.top/girl_scouts_dance_badge7krjc.pdfIn PDF document text
    • http://manibupefif.mypressonline.com/xajetonuxod.pdfIn PDF document text
    • http://viteroludobano.mypressonline.com/large_iced_green_tea_dunkin_donuts_calories.pdfIn PDF document text
    • https://cdn.sqhk.co/sodovokak/ar57vji/one_only_you_lyrics_parokya_ni_edgar.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/bO7hh73/classic_fm_radio_app_apk.pdfIn PDF document text
    • http://wisecreditscore.info/anomaly_defenders_frees9p80.pdfIn PDF document text
    • https://cdn.sqhk.co/pelotuwew/2gfXLje/holy_quran_english_translation_download.pdfIn PDF document text
    • http://bridgecommerce.com/bidudil8i2y8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/f4895088-dbf2-4423-9dc7-084094d1c8d2/78275991456.pdfIn PDF document text
    • http://fasujenijasezos.rf.gd/lizebaxosonemaler.pdfIn PDF document text
    • http://tijawob.rf.gd/liberia_history_book.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/fozezabajodarazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f91c7e36-ccd9-48b3-b596-5f947732c8c0/juxoj.pdfIn PDF document text
    • https://s3.amazonaws.com/luramamelolem/mifaxubavofibosebezipapu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/314e61e4-f9b1-4ecd-86f0-9b8ca0764c87/zoxosetugabuvopibomik.pdfIn PDF document text
    • http://redadut.epizy.com/kung_fu_panda_2_watch_online_in_hindi_on_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be6024bb-2589-4a09-81a4-de804a53e15e/cantos_para_el_domingo_de_ramos_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/vukumesoj/pink_glitter_wallpaper_free.pdfIn PDF document text
    • http://lusajafimaneru.myartsonline.com/41424509105.pdfIn PDF document text
    • http://jujiruwer.rf.gd/41710572702.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/compustat_north_america_user_s_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a4995a4-975c-45c7-9353-1079f1642cc3/can_i_lose_weight_by_eating_every_other_day.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/ruvirizezaripaxituka.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF894 5368 bytes
SHA-256: 2c216f5c54df1fce130a504563b568edd5ff9b95d80ef057eae7f607e17938f8
font_01_sfnt_off00010acc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACC 10704 bytes
SHA-256: e35dfcffe347ae8ba57021a9ee41c17d98950af403336102822322d88a957031
font_02_sfnt_off00012f62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F62 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2