Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2da22ea774692b0…

MALICIOUS

PDF

82.2 KB Created: 2020-12-18 05:24:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 1d01dabd01bcf9f21021623880cb4dea SHA-1: 9935140abd79d8ccc9808b0e7d87c7c089d2c0a0 SHA-256: d2da22ea774692b01b1688e1d1055a25eb5b998946719cd1f6a4ade1c0c4b56c
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector and others forming a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were directly extracted, the presence of numerous external links suggests a mechanism for delivering a secondary payload or conducting phishing operations.

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 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://traffine.ru/123?utm_term=onq+software+training In PDF document text
    • https://vuwugaletop.weebly.com/uploads/1/3/4/5/134588193/3174315.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/0cbd7f35736ab.pdfIn PDF document text
    • https://debuvubuni.weebly.com/uploads/1/3/4/8/134846467/5971102.pdfIn PDF document text
    • https://fapusazi.weebly.com/uploads/1/3/4/8/134849501/meritarimutak.pdfIn PDF document text
    • https://pasuliwipo.weebly.com/uploads/1/3/1/4/131452824/b2351c8.pdfIn PDF document text
    • https://gemitipob.weebly.com/uploads/1/3/4/4/134474898/9055063.pdfIn PDF document text
    • https://tugojomabam.weebly.com/uploads/1/3/4/5/134588125/rutemudako-zubajijaxe-nufusubuza.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/5fc720da0d716e027b026a97/t/5fd676c30f11661d4c2ecd2b/1607890629577/cpr_guidelines_aha_2018.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1a7ea16f6d44b07c4161b/t/5fc4ec173c02f22b9da71d5a/1606741015924/wow_gold_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/973c03cc-db16-4074-b9dc-f3954ca2870c/60536022598.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1ae857d0c8f249d464d7c/t/5fc7d33a66d87000d3bf46c7/1606931259493/cross_stitch_masters_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e01f2cf09257bd6be9c2/t/5fc0faa308845d0924ad2826/1606482598435/triangle_math_and_science_academy_admissions.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55a1324b06a7eb31d25e2/t/5fcb224411c29807e6d44462/1607148101812/creepypasta_skins_boy.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_off000103ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103FF 5148 bytes
SHA-256: 58cca6c6c79a51a78c335677a7be05d9a9d38593712f0077cf82b2ac640533dd
font_01_sfnt_off000115a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115A6 10828 bytes
SHA-256: df6492a9a7b63d65c81f3433ec927add9512e74c4b5afd1d79a42ea39378042f

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