Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e199144a320d716…

MALICIOUS

PDF

67.3 KB Created: 2020-12-02 21:11:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 5a2ccf8220b3c1fd302fd87548458231 SHA-1: 736076c17aea4ea5e1e73ad8705c422724e1912d SHA-256: 0e199144a320d71617b1d2bbf1e41790079970fb006b52c687755e472673b544
216 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics as malicious, including ClamAV detection and an ML classifier. The critical heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document's intent is to trick users into revealing sensitive recovery information. The presence of numerous external links, including one to 'traffset.ru', suggests a phishing or link-farming attempt, potentially leading to further malicious content or credential harvesting.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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://traffset.ru/123?utm_term=scom+gateway+server+certificate+requirements PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369332/normal_5f9352e581f39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376125/normal_5f8b61b7abfec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379369/normal_5fa76f984ab89.pdfIn PDF document text
    • https://wuxuburivoviw.weebly.com/uploads/1/3/4/6/134633524/5d38f0a0.pdfIn PDF document text
    • https://fekanefitogi.weebly.com/uploads/1/3/4/3/134340372/zegorabagonure_larom_zevepuja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464542/normal_5fa1ec0216f72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374188/normal_5fc5378332180.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc12a0327a199023ab7046e/t/5fc52e8ba97599144ea06d50/1606758027564/22902484084.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2fe30abaecd33182fe85c/t/5fc7ccca98e12849e07251d7/1606929613235/loxopuma.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe08786457125654013322/1606289539486/3683774130.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55f712e537a05ef26dfac/t/5fc7e3960a80c24503e38f8c/1606935446992/nesarikup.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10b71bdb33045eec31c8e/t/5fc665b518e72e5fdbb2fcdc/1606837686127/rirogij.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc524ccc30a162e0c6e112f/t/5fc747c5efc65c5b7a40299d/1606895558427/risusupidadafalaluxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2a5b095-a402-42a3-ba3b-0571f50e0eb8/tuxugivobe.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_off0000c831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC831 5652 bytes
SHA-256: 61e1adf73831c06712d7f321c850274b5c1c865cbcf011a2925ee0bde09647cf
font_01_sfnt_off0000db7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB7C 10824 bytes
SHA-256: bcef901f96f7faefd4024592b967ad302a77c1d30cbc3a2be68b40b8407f92f9

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