Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc03da8ca96de0a…

MALICIOUS

PDF

74.7 KB Created: 2020-12-24 12:48:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 0aafe15d0b15cdafdb20c379d806d0ef SHA-1: 73bdcc01d34873c28420f0c302115879001c57ef SHA-256: bfc03da8ca96de0a4240a54877629eb74cb0150526a182ca2f30ed297d802d21
96 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to PDF files hosted on file-sharing services. The primary URL, 'https://trafficel.ru/aws?utm_term=whirlpool+manuals+stove+oven', suggests a lure to a link farm designed to attract traffic. The ML classifier strongly indicated maliciousness, and the presence of numerous external links supports a link-farming or traffic-generation attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/aws?utm_term=whirlpool+manuals+stove+oven PDF link annotation
    • https://pokumajapemen.weebly.com/uploads/1/3/4/4/134490217/c7914d7.pdfIn PDF document text
    • https://fimetopim.weebly.com/uploads/1/3/4/3/134399480/9616377.pdfIn PDF document text
    • https://ninuwekij.weebly.com/uploads/1/3/4/6/134625354/853851.pdfIn PDF document text
    • https://ribifafugulif.weebly.com/uploads/1/3/4/6/134650062/rasojipas.pdfIn PDF document text
    • https://modizotu.weebly.com/uploads/1/3/2/7/132740501/guwekevizexuwafigi.pdfIn PDF document text
    • https://duxujofibedusor.weebly.com/uploads/1/3/4/5/134577283/kisiti-zekisifomuvejod-wupozogirenu.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://uploads.strikinglycdn.com/files/c5c5195e-6596-4605-bab0-2193915afb91/8541547048.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f544e0ef-350a-4624-bc20-e0ac66fa7460/nsca_cscs_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4430347c-0553-42da-bdda-c7df153b6b9f/42028418368.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aa7db27-16b4-4137-920b-968c25c92034/hitch_spare_tire_carrier_swing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91f10691-3c25-46a3-babd-ca91ae673a11/tuwirigiroberiginuvapurop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ed6ae9d-97b3-44bf-9746-97de19704ccf/nomao_camera_body_scanner.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_off0000ddde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDE 5012 bytes
SHA-256: 1325b027215e3c4d42eb5b036c0655cc4bfed0d40c521f606b61635b0649ff4d
font_01_sfnt_off0000eec2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC2 9900 bytes
SHA-256: 23d51062073e5807eb1ec7f0eb05ee83a91fa6a9f73bb1994d3c036409c64f1e
font_02_sfnt_off0001104f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1104F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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