Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e5205bf2e634fd…

MALICIOUS

PDF

70.0 KB Created: 2020-11-21 19:44:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 22438e6075007c929efbd0199619ed5a SHA-1: 172e9dacfa48d871c4a1e313383aba6b35b5feef SHA-256: 47e5205bf2e634fd844c7a79ca1bcdde8921b4a467e0b75f23e951834f4cb697
214 Risk Score

Malware Insights

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

The PDF contains embedded links to known malicious redirector infrastructure and a large link farm, indicating a phishing or scam attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to further malicious content or phishing pages. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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://traffking.ru/123?utm_term=shoreline+island+resort+florida In PDF document text
    • https://kafaziwe.weebly.com/uploads/1/3/1/0/131070109/5231677.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393349/normal_5f9c98b9afa1a.pdfIn PDF document text
    • https://rowurasivove.weebly.com/uploads/1/3/4/3/134357219/wimowupawevironat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365649/normal_5f9f81ac40754.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/1f84f9a3-fa6a-4f3e-a331-479d8cea3c5e/wukavupekufizedapidokix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a5d3da6-a81c-44ff-83f7-ef8588081e2d/long_e_word_with_silent_e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7dbaf4d-f365-4031-850d-18f19d277a6c/palme_lys_kimya_soru_bankas_zmle.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7856c364-4317-4771-9872-76f4dff1e1c7/operations_manager_resume_sample_india.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/729a9571-99f6-4cb5-84e4-745154bd2323/wosaso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0562a29d-a849-40e4-8743-57fb46935676/the_very_hungry_caterpillar_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a75907e-acba-4a09-9737-d3b7e329ad18/gupow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a42a2341-b9ce-4a25-8ac0-b33672366457/48444567488.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/305df7ff-8a4b-49d4-b494-17d852af66dd/83423162439.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48826637-d1c2-4eef-acf1-9853954c96c8/49258241187.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59d3df3d-ff15-4cd2-8701-35caee83dc4b/magic_iso_serial_crack.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_off0000d4e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E6 5096 bytes
SHA-256: f78758f185f97ecc9eb5b2eabea0dc37e74a9106b5d399fc5a1f9256b4a1db24
font_01_sfnt_off0000e62b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62B 10832 bytes
SHA-256: 22de6e950192dd9cbca3e94a737dc35bbad4bb632991fb86b57984b72da73bcb

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