Malicious PDF — malware analysis report

Static analysis result for SHA-256 982e40c67ed8c224…

MALICIOUS

PDF

47.1 KB Created: 2020-10-26 22:13:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: bf0c3d28c76b6540156da19d7e24c348 SHA-1: 3b63ccfb30e579e61bb878eceab5f902c62dc8d3 SHA-256: 982e40c67ed8c224c9f5b546594c618e72fca6d2f3846b459b841f014a379961
194 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to create an SEO link farm, directing users to a malicious redirector. The primary malicious URL identified is https://ggtraff.ru/strik?keyword=crips+and+bloods%253A+made+in+america, which is flagged as a known malicious redirector. The document's structure and embedded links suggest an attempt to lure users into downloading further content or visiting malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=crips+and+bloods%253A+made+in+america In PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/guromikenafuvegu.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/roruj-fegedevovelere-zexomojikazi-rewubujelem.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/a63fb.pdfIn PDF document text
    • https://wizamezuladad.weebly.com/uploads/1/3/4/3/134351213/82151d.pdfIn PDF document text
    • https://sumijiluwovoj.weebly.com/uploads/1/3/4/2/134266387/lopive-dotoma-xorebosavose.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366014/normal_5f94358aef47c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f873054c3ef8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370989/normal_5f9073945a357.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366366/normal_5f872ad92ede6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365536/normal_5f86f51255625.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383131/normal_5f925d2e92d0d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/57467164045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8410/2814/files/masud_rana_series_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/6947/6506/files/2230771847.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/essentials_of_teaching_academic_vocabulary.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/tratamiento_de_cancer_de_tiroides_con_yodo_131.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/burda_english_translation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/4450/9111/files/mikeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/7589/3918/files/xiroju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9766/1348/files/kim_dong-hee_shows.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4523/1515/files/what_does_square_up_mean_in_soccer.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_off00007838.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7838 5312 bytes
SHA-256: 6fbfc123631fd9840e866eedee60e9686690dfd48503b4bdd22200a7599e3dce
font_01_sfnt_off00008a20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A20 11128 bytes
SHA-256: 429122bb0fec65f4d0880bc2c77c81a6d4e5ebc88fd0ad17a8419933f117159e