Malicious PDF — malware analysis report

Static analysis result for SHA-256 035236d01010c469…

MALICIOUS

PDF

47.4 KB Created: 2020-10-22 05:05:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ac3fa4148196229668f74b0112d2ed5f SHA-1: 43b6f2bd675fc3459f1737ca55f1a90fa9290f11 SHA-256: 035236d01010c469901c82d9a06d018e9ae84f08bbea894ceed3157fcb548a75
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, indicating an attempt to lead the user to malicious infrastructure. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document is designed to trick the user into believing they need to decrypt an archive, a common tactic for hiding malware. The embedded URL 'https://ttraff.club/pify?keyword=ver+contrase%25C3%25B1a+wifi+apk' is a primary indicator of this malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://ttraff.club/pify?keyword=ver+contrase%25C3%25B1a+wifi+apk In PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/1591762.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/f57a89210a78b.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/9376504.pdfIn PDF document text
    • https://rijizego.weebly.com/uploads/1/3/0/7/130776487/8e829.pdfIn PDF document text
    • https://sizukejagu.weebly.com/uploads/1/3/2/6/132681884/9244ee6119.pdfIn PDF document text
    • https://batagokefo.weebly.com/uploads/1/3/1/0/131070859/2703502.pdfIn PDF document text
    • https://melegejisud.weebly.com/uploads/1/3/1/3/131379421/1799232.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/ba8917e282f650e.pdfIn PDF document text
    • https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/besosuror.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3397/9811/files/plural_bacteria_definition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6593/1936/files/macroeconomics_chapter_6_test_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9950/3254/files/74072303923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1918/9915/files/kroger_breaded_okra.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9009/0413/files/36099320433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4828/7904/files/79201376492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/2844/7900/files/23515340104.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/7184/6597/files/57879906176.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/702bd8fb-88c6-48ac-93d7-2979afa192eb/77433302830.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cc32e169-52f5-480b-9833-a0a7d72b8fc1/first_aid_appointment_letter_templat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96e17c5c-9ebe-4d30-8bd8-bdcfd65fcf68/93013944804.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_off000077a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77A3 5308 bytes
SHA-256: 69990d3ca03a612bd54034cc5060e0a96396e886214191ce2a4bcb0a70e06729
font_01_sfnt_off0000898e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898E 11372 bytes
SHA-256: 8975fe53e2d6cc664511753c84cb098a3bff5ccda490a2e02f0d6a58fbe6cced

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