Malicious PDF — malware analysis report

Static analysis result for SHA-256 76295795e0c86996…

MALICIOUS

PDF

60.7 KB Created: 2020-11-11 02:46:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: aa35028b5ca6c24b511128274f2b71e2 SHA-1: ddb127a430efe55a700ff9d302380abe82be84a4 SHA-256: 76295795e0c86996e24a989fed0c5d845bd354e7a1b8398a8cbb9df1a08c9baa
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://traffine.ru/aws?keyword=shawnee+high+school+wolf+lake+illinois+1964 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454300/normal_5fa4f63ecb67b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369512/normal_5f8b0e99b523c.pdfIn PDF document text
    • https://fawurefo.weebly.com/uploads/1/3/4/4/134441885/xebigazalasir_logit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f991a818b7f5.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/37865ace-3362-4d88-81d1-a6e39558cb87/71661730749.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66b7aa3c-0fbf-41df-9555-adf743fa01b3/xamarupalixukike.pdfIn PDF document text
    • https://s3.amazonaws.com/suzeduselu/54703587040.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77e14572-79be-43f2-9565-270cf08f029c/csv_to_mdb_converter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd02b1f9-ad70-4e6a-8a04-6dcc7dab8be1/kojolipu.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/el_analisis_del_discurso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ffb752e-72b8-4433-855d-40d529d9ae77/85197153414.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/ping_iptv_app_firestick.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60c1bc2a-6c89-4386-92f7-c5804aca4d33/ray_in_geometry_meaning.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aeb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEB9 5756 bytes
SHA-256: 5babc5e307a77c681d3acea2fa2ed57bab34fb2a13ab382d07c7bdcc1fee306b
font_01_sfnt_off0000c26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC26F 10484 bytes
SHA-256: 942cb97e92747caeacd1e89767eac45262bc002c8c5af6486ada7a88c6feb6db

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