Malicious PDF — malware analysis report

Static analysis result for SHA-256 380a814082e0681d…

MALICIOUS

PDF

69.2 KB Created: 2021-05-18 11:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1df8c0a3a45536ee4954f395a9d7a482 SHA-1: 9f61669f5d32f692d5a1ca4c8d69c23476fe59d9 SHA-256: 380a814082e0681db7ee7a2081425dd2e4dac44d3fc9cf62d869cd04af873f71
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 0.9998

Heuristics 5

  • 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.
  • 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://lozipotod.ru/strik?utm_term=principles+of+engineering+thermodynamics+8th+edition+si+version+solution+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4394060/normal_6046208ef160c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426690/normal_6006e67fac06f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376601/normal_5fdeebd451a86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465908/normal_60074f0cd4956.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380088/normal_5fd065b273b30.pdfIn PDF document text
    • https://bugituwixumanuz.weebly.com/uploads/1/3/4/7/134722584/valerazenig_lawenuronul.pdfIn PDF document text
    • https://vilegewadaw.weebly.com/uploads/1/3/5/3/135324537/bekuwaji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476126/normal_6059f12b4f405.pdfIn PDF document text
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/843bbee62442e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408596/normal_6056c73d499c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379744/normal_606a6627620da.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445331/normal_5fc81ac9aabaa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369796/normal_5fe0f75bb60ab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c522a04-eb7c-417b-9efa-7319534270f5/30655656572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7abbb97f-cdc2-4771-8533-fb7f5b65b43e/92567881263.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5651ac7-b162-4275-a52b-89a90718cae7/gisilofowenagojolidasidev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acf1c27f-9c09-4023-a2a8-cab51dadd690/child_by_tiger_short_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eaccdda-e657-4f32-ae9c-4445a4e4c768/critical_and_creative_thinking_skills_definition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd79c3d4-e7e3-4bed-a498-3dd23df44688/waterproof_800_battery_tender_harley_davidson.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1a72c6a-382d-4194-a6b1-6b9a4c1ce5d1/directv_wireless_video_bridge_diagram.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_off0000cc1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC1D 5928 bytes
SHA-256: 1fb6b0986a3fe2906a8a31f0343f29821bde25d7390f74b073f7e30fc2c961da
font_01_sfnt_off0000e027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE027 10876 bytes
SHA-256: fa345b9ebb2878eff4f64fd5a9fd715dde7a9ca2344ae14d84b9197cae53fa2b

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