Malicious PDF — malware analysis report

Static analysis result for SHA-256 e19d0424688692ee…

MALICIOUS

PDF

89.2 KB Created: 2020-10-09 22:24:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 53f4a206bfd128a0a09182d51b1eda4b SHA-1: 52897eec5a8c22579eae5e8c455d77e1c188cacf SHA-256: e19d0424688692ee43255498f5004a44588fd16490e2be9f55f3d7fd4c75cb79
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious. The presence of a link to 'ggtraff.ru' suggests an attempt to redirect the user to a malicious site, likely for phishing or to serve a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ggtraff.ru/strik?keyword=head+of+slytherin+ravenclaw In PDF document text
    • http://xozaj.liviyahansen.com/uploads/1/3/1/8/131856643/vokaf_wozorima.pdfIn PDF document text
    • http://livawuju.limousinesinaustin.com/uploads/1/3/0/7/130776089/4b17dd1b.pdfIn PDF document text
    • http://files.seamstobedone.com/uploads/1/3/0/9/130969242/17ed2609a46f1.pdfIn PDF document text
    • http://files.dbkristiansand.com/uploads/1/3/2/7/132710694/xupaledivu_zejutexewubak_simoj_wozogisovure.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/43872de8-e2ed-41d8-a53a-52fc2628025c/19624584701.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f1cb684-3faa-40f0-a1ac-143ab8ee14c0/siwonuvalaniwotemoluwojox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d4c357b-eb29-477e-b2f5-bd428e750ade/18851452114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7895/4389/files/meiosis_and_mitosis_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5944/4382/files/maus_page_80.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5820/5350/files/bivinami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42cb363d-e725-4727-9793-7a0eb4880992/50757548770.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d37f3e34-b157-42fe-8b9d-6e0b2a3b3cf7/pasuremetorupunuvudirud.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B5 4916 bytes
SHA-256: 55f6bd117cad74980f03ede16592f7a69572779787344e9dae77dab6804137d1
font_01_sfnt_off0000eacc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACC 5324 bytes
SHA-256: c0806058722c391b6a691c6132a0620c98965ee5a0dc3471cd77b5faf9c0a94d
font_02_sfnt_off0000fcf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCF9 4828 bytes
SHA-256: 3338696afc62d956e723269d42d52e680fccaf5b34eaa4a5b082da404fe15da0
font_03_sfnt_off00010cb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CB0 16112 bytes
SHA-256: 6281300195fc41ef7c4b796ea4c90c05ff8eeda5282a98778e2c8ee7562768f1
font_04_sfnt_off00013e0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E0A 17008 bytes
SHA-256: 4e79253126079235e076e5c1fdda0d568689a6712cd35ee8feaf1ce781b48cce

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