Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ccbb4c1c6836802…

MALICIOUS

PDF

67.9 KB Created: 2020-12-30 05:15:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 35c4387b5e1f9bfc07d0c573206d8ae3 SHA-1: 0af3209be862353a0a8717d300c93e53ef245172 SHA-256: 8ccbb4c1c68368020b40d0e4003d6b05d51aea656dd8ad0a03ea708817d4f891
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of external links, indicative of a link farm or phishing campaign. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs point towards an attempt to redirect users to malicious sites.

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://traffnew.ru/123?utm_term=imperfetto+o+passato+prossimo+quiz PDF link annotation
    • https://cdn.sqhk.co/zigimovovu/GsRjaRF/happy_friday_and_weekend_fall_images.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377933/normal_5febc3d2b4fac.pdfIn PDF document text
    • https://kunasituper.weebly.com/uploads/1/3/4/7/134765547/dodezitubejorizu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379240/normal_5fbdf2690c98c.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/6hchdjg/51425746893.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409420/normal_5fb31bab933d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4498868/normal_5fdfcbac58bf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371553/normal_5f8b29a394e11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384482/normal_5fab39fcd13ed.pdfIn PDF document text
    • https://favasonod.weebly.com/uploads/1/3/2/7/132740296/ce7989a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375086/normal_5fcbde881a3e1.pdfIn PDF document text
    • https://gatilavim.weebly.com/uploads/1/3/4/3/134391542/deluxogopuje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414176/normal_5fa32e3e33e7b.pdfIn PDF document text
    • https://towetebofipu.weebly.com/uploads/1/3/1/4/131437669/caac1ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371248/normal_5f920253993d0.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
    • 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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bec6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEC6 4904 bytes
SHA-256: 082157408e23001d8683797479e108fe92b01ac9045553d0ce4bdd0fa53f69b7
font_01_sfnt_off0000cf79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF79 11476 bytes
SHA-256: 8a575fb47d982133c768c65f2432fa74dae6b87afdacaad71ce4a49fdd30446c
font_02_sfnt_off0000f4c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C1 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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