Malicious PDF — malware analysis report

Static analysis result for SHA-256 30a85e66fa19e60d…

MALICIOUS

PDF

76.6 KB Created: 2020-11-24 22:19:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 74b2a6a3582db1114c82f3bcdc733039 SHA-1: deeca84510114970339e124c7443b8c240365e95 SHA-256: 30a85e66fa19e60d2472cce3fb2b58cbaaa4d81147e4193b3128ece8142b2ea9
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://traffnew.ru/aws?utm_term=teri+meri+kahaani+full+movie++wapking PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4475854/normal_5fa73bfb0a56b.pdfIn PDF document text
    • https://gefedotozowane.weebly.com/uploads/1/3/4/3/134395864/wovojif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375351/normal_5f89772dd1fb4.pdfIn PDF document text
    • https://suleduzon.weebly.com/uploads/1/3/4/4/134403341/2846107.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501201/normal_5fb5f424323a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369491/normal_5f89dac81d7b5.pdfIn PDF document text
    • https://zuwuwuxi.weebly.com/uploads/1/3/4/8/134883554/1436275.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387928/normal_5fb56ae15cace.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410002/normal_5fb5d559e2ab0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ee90904-66aa-473e-a18e-c0822625c59f/nuwave_digital_air_fryer_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9cad9a6-c408-46d2-bbda-c4011404bf9b/adventure_quest_hacks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04a64cab-1fde-44df-9686-99f687baedc4/hacking_con_buscadores.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/leeds_city_schools_leeds_al.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC632 5300 bytes
SHA-256: b403fccba6ceb017df5ef7dddda095fe3ee741597f22756b5bee0731267afb9b
font_01_sfnt_off0000d827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD827 3720 bytes
SHA-256: 40ef96da86b6123d577d475be460de15c41b9ca7393a8e650be4e9942aa3c64b
font_02_sfnt_off0000e389.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE389 11128 bytes
SHA-256: 39862c7459ad96745d8481d12aa3ba4cd4060c12e80e096c5532030ba12c8975
font_03_sfnt_off00010976.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10976 8296 bytes
SHA-256: 390c315c81743ec3a6ae3dba8c85dfaa6a3de3f407c42e9bc986e026291d24c4

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