Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c0e2ca2a45152cf…

MALICIOUS

PDF

83.5 KB Created: 2021-06-05 00:24:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: def0097f052eb8f995e703058674c692 SHA-1: 947c300d20fd80945badd4daa7f54b2f687e2a21 SHA-256: 3c0e2ca2a45152cf3dde95796b5394c01c2da593f6ff7dc9c6a687c56e5ad910
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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. 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 0.9996

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
  • 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.
  • 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://soxebez.ru/123?utm_term=latitude+3490+datasheet PDF link annotation
    • https://mugibutu.weebly.com/uploads/1/3/4/7/134714928/rutazagegabasagigaz.pdfIn PDF document text
    • https://noxijinijomud.weebly.com/uploads/1/3/4/7/134746703/5476651.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483833/normal_6065ee1dcefda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411231/normal_605b0a66c7b51.pdfIn PDF document text
    • https://xiwigelu.weebly.com/uploads/1/3/4/6/134644840/5922564.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412377/normal_5feff0b6e5c0f.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/7cfd30d1-36a7-47fd-97d6-1200d5c4b7b2/dbt_house_printable.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a5e4d3d-9329-4d9e-8d1d-7c121a078296/13098462380.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc44fc70-16c3-4da2-bb67-91d26d755c7b/nofiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f8d525f-16b6-4c89-8869-7af1a4cd3dcc/weighmax_scale_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5453215b-67d2-412a-bb93-97f6b245da46/suvosipi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c42cdb3e-672c-4689-8399-34f2de253773/honeywell_rth2300b_installation_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49870109-5485-4491-9422-2421275feb34/shrimad_bhagavad_geeta_in_gujarati_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/961ca8ef-472d-47cc-87f0-6b6f3991427e/trigonometry_formulas_for_class_10_in_hindi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14e1dc28-f6ff-4da9-afee-e507f84dc212/anime_characters_born_in_march_27.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c342762-f73f-4d9d-bae8-82f3af9d165a/the_things_they_carried_ap_essay_prompt.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b437650-b267-4d96-b6f9-854448859a57/53572271951.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8980637-6960-4638-91ec-91bee1c57253/uniden_bearcat_bc350a_modifications.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2BF 4940 bytes
SHA-256: 5ae0522ff19c6741dd8f9e0150df6371bef24a44621d7367474109734c38452d
font_01_sfnt_off0001038c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1038C 2280 bytes
SHA-256: 9223180bdbb945b1456333fdd3148ccdab0d85e39355725b398d25ad2bba507c
font_02_sfnt_off00010d56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D56 10944 bytes
SHA-256: 74e0f40dbceb7e591dea5e6efa47d43feab50457010b9ac4492781b5371ebfc0
font_03_sfnt_off000132a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132A7 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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