Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb542e4f4e16114a…

MALICIOUS

PDF

37.1 KB Created: 2020-11-09 14:49:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0a4609b0ffea27815b8e1cc983acb1c9 SHA-1: d33188665419fd5eeeefc1497f1ef5e611af33cc SHA-256: eb542e4f4e16114a5cefff0d9967753ea34967ce861b3cb9a3512e4615951016
96 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 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 1.0000

Heuristics 4

  • 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://trafffe.ru/123?keyword=crystal+report+format+date+in+formula PDF link annotation
    • https://sojebubibofanex.weebly.com/uploads/1/3/4/5/134512436/jikexotonu_botije.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420743/normal_5f9cdd8dd5378.pdfIn PDF document text
    • https://pewoxunoxosizix.weebly.com/uploads/1/3/4/3/134318290/lojofutufev.pdfIn PDF document text
    • https://varavedonenen.weebly.com/uploads/1/3/4/3/134316352/65bed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417834/normal_5fa6251437e73.pdfIn PDF document text
    • https://gujidasudaximuv.weebly.com/uploads/1/3/4/3/134384457/2302479.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/17aa71d8-e341-4566-b265-550946fd5428/54849841069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65722e07-1e49-4c39-a578-ef877b2fdd03/wesorexepovasumarof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9487764-4276-4a00-9611-6cae083afef4/3rd_gen_pontiac_firebird_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f86c681c-77d2-45f5-9a2f-1d91a5d5fa4f/gexuwaviwanafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/27a6873d-1b3a-4737-bf01-bb833e0a2e29/mejif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2219ea8-cb5b-4394-8d8b-83d340aee9b0/fifty_shades_of_grey_3_parents_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d7ddaf1-3c50-4ed2-b7d4-20cc7e783e5e/pumubimexanisafumefon.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_off00004ea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EA7 5196 bytes
SHA-256: 933ab74602fb669c868d252a578f9cdb72af4cf1c8bbe32740e9f052cc80d057
font_01_sfnt_off0000603f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x603F 11516 bytes
SHA-256: 77360c7c7a1dc2ce498eb01cd95bbbf5a310e3581799da9adee3f89034ef830a

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