Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd04779511edf1c9…

MALICIOUS

PDF

70.9 KB Created: 2021-02-14 21:40:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b4c5309a958134302637d014baaa3db2 SHA-1: 7e901b983ee3e7e91c87493558cf0ac9e9fe2c20 SHA-256: dd04779511edf1c984e331bd93db9839c736d82ce38a9ad12e9a71e96e69f1c4
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://crophysi.ru/wix?keyword=westinghouse+smart+tv+32+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4419827/normal_60253484501b1.pdfIn PDF document text
    • http://shoop-fm.ru/adrenalin_lpband_manual1c0x0.pdfIn PDF document text
    • http://anstel.pro/44956584315vi4ic.pdfIn PDF document text
    • http://kidepokapila.22web.org/jofebarojewem.pdfIn PDF document text
    • http://thecabinets.xyz/darazotosugegekexi0g5gc.pdfIn PDF document text
    • http://worodariravo.22web.org/baldomero_lillo_biografia.pdfIn PDF document text
    • http://dinodosum.iblogger.org/jutodubaginuberalononeg.pdfIn PDF document text
    • http://boviriso.22web.org/pokikov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380680/normal_600e7f2be30b6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rimepusox/punuv.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/bitumen_sheet_supplier_in_mumbai.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/23101138335.pdfIn PDF document text
    • http://wegatanubuguze.rf.gd/application_form_for_nsfas.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_off0000d964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD964 5468 bytes
SHA-256: 824e94908d3619812368ec4a7e063e74a03e6f53e23cec48e979e3e70ff5649b
font_01_sfnt_off0000ebe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE1 10284 bytes
SHA-256: a9459373149a413425eef9a186b8bac56b0d5902b26457e66d3d30a79bc40440