Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0cfa08b4f96d1db…

MALICIOUS

PDF

71.6 KB Created: 2020-12-17 00:35:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 084a6c891108b2f773f9ed7174d3001b SHA-1: 11aab3a3c63ec8185cabf1f387b5d500cf74660e SHA-256: f0cfa08b4f96d1dbc8dfa3847cdd4da2051e2f1247393fbbd41a65df0b43e05b
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, a common tactic for link farms and phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. The embedded URLs suggest an attempt to redirect users to potentially malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=agnus+dei+sheet+music+pdf PDF link annotation
    • https://gakuzelidojipo.weebly.com/uploads/1/3/4/3/134395763/rozopar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416796/normal_5f9d4e1f97b58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426551/normal_5f9c1820480a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384463/normal_5f98776f05bd0.pdfIn PDF document text
    • https://korodaziso.weebly.com/uploads/1/3/0/7/130740443/41839c2cea9d9b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5fb5538887af7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391047/normal_5fa945a7673f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455658/normal_5fda87b483d08.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383452/normal_5fbe317d2ed41.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://static1.squarespace.com/static/5fc554abdf132613bbdafb9b/t/5fcc3eac83d2ac65cc06ac47/1607220908768/58588656252.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25756735-e6f6-4f01-a2a5-33d9b9d2a4eb/simcity_4_strategy_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/016b7e9a-7a02-41f4-9e0e-aa2f3bce5cb9/36586352727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56a7b43d-2e48-43a1-86e1-42deb6374eb0/bbg_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4a79319-1805-4b24-8406-7c908e6a3e45/bootstrap_bill_turner_makeup.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B8 4992 bytes
SHA-256: ea4a380c6cc91328967c3350cff08027b2499db4d2d52dd9f3de8630e3c2941f
font_01_sfnt_off0000da95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA95 12472 bytes
SHA-256: 7663e249e1d7c126bbd792bdc272220c46e8e152b40ffe341aa3c48f8cf3a374
font_02_sfnt_off00010369.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10369 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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