Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4e757465486580d…

MALICIOUS

PDF

115.2 KB Created: 2021-03-10 03:34:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 56857215d5b224efa05adb8a176c12dc SHA-1: b1a1896964e9730af897b51377125c7fe548ff72 SHA-256: d4e757465486580df946c98faa17b11546cd467a3447eec9213e689f6a6f632b
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a lure related to 'Bacaan sholat beserta artinya pdf' which redirects to a malicious URL. Heuristics indicate a link farm and SEO redirector, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to deliver a phishing page or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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.
  • 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://kuzutuzo.ru/award?keyword=bacaan+sholat+beserta+artinya+pdf PDF link annotation
    • https://sabigojepesadiz.weebly.com/uploads/1/3/2/8/132814096/22f298673.pdfIn PDF document text
    • http://hookup757.fun/is_extinction_more_common_than_survivalk63kz.pdfIn PDF document text
    • https://jogabaxeke.weebly.com/uploads/1/3/4/7/134704809/553d4f.pdfIn PDF document text
    • http://prizinsta.site/employee_training_plan_template_in_excelaqhrt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381321/normal_6041ac0673e94.pdfIn PDF document text
    • https://tadarumoroje.weebly.com/uploads/1/3/4/7/134724086/sexotigavunatis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381788/normal_6013f27e209a1.pdfIn PDF document text
    • http://funseeds.site/how_to_turn_on_sub_zero_ice_maker79sim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457330/normal_5fd1bd7e0f863.pdfIn PDF document text
    • https://sinukunub.weebly.com/uploads/1/3/4/4/134431456/wemax_rovilamisunelo_nojalamomal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501654/normal_60478111a781b.pdfIn PDF document text
    • https://vapaniwagivu.weebly.com/uploads/1/3/4/4/134442769/merurutufonibata.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402280/normal_6047056b634f9.pdfIn PDF document text
    • http://creditpm.com/avengers_theme_piano_sheet_musictl8lh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421217/normal_602d8dc79108f.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
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/rofividi.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/38168323702.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/wedding_card_maker_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tokudapele/vavikuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/lurupimovuxasigu.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/luigi_s_mansion_3_gem_guide_b2f.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/husqvarna_viking_emerald_116_sewing_machine_price.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00016deb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16DEB 32100 bytes
SHA-256: c84f3ddd678138f9a88400bd63f613f8b9dbcaa157890f4484ef14b7913d3cef
font_00_sfnt_off00012480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12480 3104 bytes
SHA-256: 24551eddf735aab63d4c7e1e241f9f40a571c0286a9358847cb31cf4386de53e
font_01_sfnt_off00012f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F93 5320 bytes
SHA-256: 3e8df415bb5b6ae4c096b0e1c1f97e8fde131d0c7c1e60ab8d04a4e5bab64562
font_02_sfnt_off00014195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14195 13736 bytes
SHA-256: e67bc43ce46fc57d57ce2868497a5d654f587c79417a8d73b69010b9566d2d77
font_04_sfnt_off0001a693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A693 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
font_05_sfnt_off0001b494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B494 2300 bytes
SHA-256: 4cd45b7e1d6bcac2e1fec216823c5ae0069563e9b289993219381b236af58839

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