Malicious PDF — malware analysis report

Static analysis result for SHA-256 50fe3dc986262593…

MALICIOUS

PDF

175.8 KB Created: 2020-10-18 15:30:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 3097b3d28a6885511ba507a7f19f2f9d SHA-1: e50feabed69a4aa35fbf837e3dcc74dacd8cec83 SHA-256: 50fe3dc986262593f40dea3e6458f945010dd1732128663b9117ad7a6ab0166c
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document impersonates Facebook to trick users into clicking a link, which redirects to a credential phishing page. The embedded URL `https://ttraff.club/123?keyword=places+to+visit+in+shirdi+pdf` is identified as a malicious redirector. The document also functions as a link farm, leveraging disposable hosting to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://nagifinapu.weebly.com/uploads/1/3/2/6/132696111/7115017.pdf.
  • 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://ttraff.club/123?keyword=places+to+visit+in+shirdi+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f8712f1274b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372737/normal_5f8c05d27e1e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379476/normal_5f8c01dfed838.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382421/normal_5f8b417c6b81b.pdfIn PDF document text
    • https://nagifinapu.weebly.com/uploads/1/3/2/6/132696111/7115017.pdfIn PDF document text
    • https://milavigik.weebly.com/uploads/1/3/2/8/132815866/6787828.pdfIn PDF document text
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/xaxebujakaw.pdfIn PDF document text
    • https://jixepelisu.weebly.com/uploads/1/3/2/6/132695865/negisarulizix-pufavokojafa-jaxinan-vusav.pdfIn PDF document text
    • https://berajuvexoru.weebly.com/uploads/1/3/1/8/131860787/7e3d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f8710cc1862f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373241/normal_5f8a0ff48596a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_5f8ba0fd3a142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366405/normal_5f873bccae3b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379035/normal_5f8c05e9b334d.pdfIn PDF document text
    • https://molisemopum.weebly.com/uploads/1/3/1/4/131437834/2512569d37b73c3.pdfIn PDF document text
    • https://tenagudewujuga.weebly.com/uploads/1/3/1/1/131164273/1904193.pdfIn PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/mipalovemof-jovigatoje-sesufiwobugitol-nubawawakid.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/c25f730.pdfIn PDF document text
    • https://zirufifun.weebly.com/uploads/1/3/0/8/130874679/8076346.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367308/normal_5f87e2c384aa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380869/normal_5f8ba85b66621.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377674/normal_5f8acab26c5de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376120/normal_5f8b83d0750d1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/50e9723b-6d54-4d85-a146-2b75844886d2/78754733547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d7b6938-b6ec-4c08-b40b-8a6c8b73a8e4/zajisesulizisoxewedevof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7799fed1-b329-45c1-b6d0-3e03800fefd7/ximumitisipapuzelaxoxexir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48e963b5-a634-4387-8bea-83d2c3f26cf0/66889402231.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29dd0b5f-9d19-4ecf-bb30-c8f9e706f036/80584930057.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002626c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2626C 5092 bytes
SHA-256: 9212881a6053b5f062498d6febba1e3a4e87e8bca3c2460c4344718b4a2d0d94
font_01_sfnt_off000273a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x273A3 14824 bytes
SHA-256: 83914d570dff82d34c015ca376e6b0ca4ba69daa6e623bdf6c3f1fbd9e708f7b
font_02_sfnt_off0002a1fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A1FD 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2