Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbfb04514019dd6a…

MALICIOUS

PDF

38.4 KB Created: 2020-10-26 08:00:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 58d01adc3174e3a01870d58398f5f212 SHA-1: 42a15e758de9dba35c00cae5970bfca20aeb1076 SHA-256: fbfb04514019dd6a243cb40cf4be161790d9f8ec5789aa3a9521805c76739e9d
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to S3 buckets and Weebly-hosted PDFs, suggesting a link farm for SEO manipulation or to obscure malicious redirects. One critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.me'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/pify?keyword=panasonic+g80+manual+pdf', indicating a lure to disguise the malicious intent. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.me/pify?keyword=panasonic+g80+manual+pdf In PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/8071333.pdfIn PDF document text
    • https://wajiresejepo.weebly.com/uploads/1/3/0/7/130774962/wovexotepevop_xodol.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/kevesovobip-kijejuposo.pdfIn PDF document text
    • https://liwifaxuje.weebly.com/uploads/1/3/0/8/130874244/fovozitagozu.pdfIn PDF document text
    • https://sevenunoxesu.weebly.com/uploads/1/3/4/3/134341304/79757.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369491/normal_5f910bdfa47e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368469/normal_5f91663b92730.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387040/normal_5f928b9b5531b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367646/normal_5f889cbf3d860.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/edward_snowden_book_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/lafozamubowitabolo.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/ganpati_atharvashirsha_marathi.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/antimicrobial_susceptibility.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3625ac9-af1d-4601-9b0a-a52e68de0bb5/homeostasis_feedback_loop_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97e8c1b4-be03-40e4-9e7d-3422dd466005/wiriwotuzi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/653e2f4e-884b-4caf-8560-9b94f86250ee/69047504887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5b0725b-48fd-41bc-b39b-0d702eb19022/marad__la3sab.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/47676668480.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/blagues_en_francais.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/kefeniru.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_off000054e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54E4 5716 bytes
SHA-256: ac5d083b7770d48d5c1060911ae27c00e57e50201f7f10c6f91efb5ced655c4c
font_01_sfnt_off00006839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6839 11240 bytes
SHA-256: eb06b279934d9e1120f8a591707edb5694d14fc05769b5dd603de4f9d43847dc

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