Malicious PDF — malware analysis report

Static analysis result for SHA-256 4095c10b70c9c00a…

MALICIOUS

PDF

72.7 KB Created: 2021-05-29 07:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 242a3215322748f3bbdf0e9ac00ef7fe SHA-1: 53bdbf22298a73de910df7fe81e59b46481e841f SHA-256: 4095c10b70c9c00a46c75de52113475254602e757bb3b91124b0751482ae4a13
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pelibifir.ru/strik?utm_term=pokemon+white+2+rom+hack PDF link annotation
    • https://toreliga.weebly.com/uploads/1/3/4/3/134335880/paroditaw-wumoz-zepedovur.pdfIn PDF document text
    • https://xuwutofir.weebly.com/uploads/1/3/0/8/130813860/5bf0ca.pdfIn PDF document text
    • https://gobalubige.weebly.com/uploads/1/3/5/3/135339343/0082313f598fdb0.pdfIn PDF document text
    • https://rariborujur.weebly.com/uploads/1/3/4/4/134443596/bukogovefigime.pdfIn PDF document text
    • https://kuwavumiwedow.weebly.com/uploads/1/3/4/6/134673312/vatalobubuj-kuravagun-veseloxojunifi-wageketoxolis.pdfIn PDF document text
    • https://xovipapapili.weebly.com/uploads/1/3/0/8/130873893/7457604.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/af3775ef-0b54-449b-97ac-6ab28ae0b6ff/23341659928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f3cb55e-e462-4f74-8d46-9fe1145a8ec3/kitezejesunagebagodop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54a11f6c-ddca-40ed-8053-412056f5c902/cules_son_los_sntomas_de_un_odo_inflamado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6ee4b45-f7a6-4641-9e2e-8a4f879bb24c/wheel_in_the_middle_of_a_wheel_song.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c6f8542-c44c-4914-8831-d49c614c8ed9/how_do_you_say_sun_and_moon_in_different_languages.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e36baee2-0399-45d7-9c10-fac0f9db02cd/volume_of_cylinder_and_triangular_prism_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c2396e-0110-42bd-aa90-ed9c92bcc62e/machine_learning_for_hackers_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/836f89ca-0152-43d6-bb16-f8ffd4f67db5/kenmore_stackable_washer_dryer_will_not_spin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ad138a4-1e78-4bec-b0ae-502d7d4abf63/fujizubigubinimumiwobuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc425f76-7051-43fc-aba8-96f011647c1b/depifefupenotisapuganebi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/357ad8c4-dc60-465f-aa2d-9d112b5949ed/why_ruth_is_important_in_the_bible.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000deac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEAC 5120 bytes
SHA-256: f3fa1d9db826c3fb83fc02f1a010a8f373a046cf0b466861e5eaf89169fc709e
font_01_sfnt_off0000effd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFD 11436 bytes
SHA-256: e69ca6759d0ba3277b63be3ca4bc8df370072d89da6b9bd9850c3f1c2d8504fb

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