Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0005fa9fd33e38b…

MALICIOUS

PDF

42.9 KB Created: 2020-10-28 07:13:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 9913bc7312b6bb6fa6f8df7f98d04de0 SHA-1: 7cbbd8080ef783554934056fe93a3215f8f7d5b0 SHA-256: d0005fa9fd33e38bc1c1f3b06d5204c4945b4b21489318c6c58801bea56b72d9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded links, a common tactic for SEO poisoning and redirecting users to malicious sites. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a link to 'ggtraff.ru', indicating it leads to known malicious infrastructure. The ML classifier also strongly indicates maliciousness.

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://ggtraff.ru/wb?keyword=bearing%20failure%20modes%20pdf In PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/dapakolun.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/990857.pdfIn PDF document text
    • https://nizesuvijeva.weebly.com/uploads/1/3/1/6/131607023/18534c9f8.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/d4427aa0-c6a9-46ac-b2d6-44382d55726b/5989211921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16bbcaa8-4bf8-4cc4-b286-101007ca2200/novena_perpetuo_socorro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6bf8c1b-62e7-425e-88a7-0e3c8210d566/ludulegodegime.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4120cb5-9ae7-4c01-b6d3-df593c1e9925/vuxizujorimitezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3298/3190/files/kadamusovagotijex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9506/4733/files/list_of_common_cations_and_anions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/519f34b0-0dd4-4b18-96cd-81627b192827/10168984466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eff6af51-d75e-467a-b839-a4dfc2b6eeb5/vozemalanusuzoriziturofi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7218e341-ff35-4213-8166-6c03b590b9ca/y_f-_x_graph.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a87efa06-b398-4330-b6c1-25c19b220abb/74115271086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6d7eb42-34fe-4f35-a436-0b7028ed1c48/vamukisogu.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/data_structure_and_algorithm_multiple_choice_questions_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/mikuxizupo.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/trigeminal_neuralgia_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/foporujazilud.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/inside_al_qaeda_and_the_taliban.pdfIn PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/bushcraft_101_portugues_download.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_off00006995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6995 5408 bytes
SHA-256: 5f35ab161e5bdfd3978faaa8c28abac21da4665d46b21b38b76d85bfe686d374
font_01_sfnt_off00007be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE7 10204 bytes
SHA-256: a3ff2cb0fe3bb4c02f83c4fd4b8bfe99c362fa881a0c2c901b678a4823fd34d7

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