Malicious PDF — malware analysis report

Static analysis result for SHA-256 965e9571f51f9258…

MALICIOUS

PDF

89.9 KB Created: 2021-05-28 22:53:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7ced87395c7bdd9e89b6271d0579c5be SHA-1: 1fa6e1646f61829ce9d8b8a33d088a6c2abf1563 SHA-256: 965e9571f51f92580e569ad614b8c0b3bd60917b001b8c3b09e58d6e145fa81c
164 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://resalured.ru/strik?utm_term=hum+aapke+hain+koun+full+movie+free+download+720p PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4378393/normal_6049e3c10efbe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420029/normal_602088691b3a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383128/normal_6064632517455.pdfIn PDF document text
    • https://juruditusevowe.weebly.com/uploads/1/3/5/3/135329261/gevaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412887/normal_60691c768c897.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410694/normal_5feb6a0b10e30.pdfIn PDF document text
    • https://tuwoganerolet.weebly.com/uploads/1/3/4/6/134631505/4716310.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458628/normal_603f94307fd56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460678/normal_606da6e9b18c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368952/normal_6028ededf2b64.pdfIn PDF document text
    • https://pijezokonogoxa.weebly.com/uploads/1/3/4/3/134308979/dezomiviziposu-tojononoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366351/normal_60138698913e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380701/normal_600ed9b129d3b.pdfIn PDF document text
    • https://nixodogal.weebly.com/uploads/1/3/0/7/130739919/jogesew-kosinisogenusuv-luvidemenat.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.orgThisIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/c14542bb-9f15-421a-8c07-083aa4767c56/98946332348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca66db87-d3d5-4fdd-8454-3dc992755c1f/operating_systems_for_computers_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d7b2ac5-d7b6-422e-8e08-10153c4d789f/man_on_fire_full_movie_in_hindi_dubbed_download_300mb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b57988d6-3391-4a34-baca-68706a7d9ff2/rescued_firefighter_9_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaa63980-dc37-460d-9539-1a578469ac1c/fantastic_beast_and_where_to_find_them_2_full_movie.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
    • http://scripts.sil.org/In PDF document text
    • http://scripts.sil.org/OFLAbyssinicaIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDED 5436 bytes
SHA-256: 01e3d7ec11dff3032332d453306f021e2c6d7d3f38f4d81385ed1526cb8033ef
font_01_sfnt_off0000f052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF052 20968 bytes
SHA-256: 87985804ebf98b1030980f20b4e39595e1aa76caccafc3e7d64f2ca02509db1c
font_02_sfnt_off00011084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11084 6096 bytes
SHA-256: fef944fb44ee72760e75abb78711aae2126dec180ee1e294db60d3e532a2bdf2
font_03_sfnt_off000124a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A0 11600 bytes
SHA-256: 40d5132bbbff1c6c006ed5b9c9663b09ccafb645a15944080cb62b1a9cd590ef
font_04_sfnt_off00014add.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14ADD 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f