Malicious PDF — malware analysis report

Static analysis result for SHA-256 704fbfa6f1099023…

MALICIOUS

PDF

48.7 KB Created: 2020-08-07 00:21:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48be0df1274b5d804c5f05259e8e7c84 SHA-1: 72d396495880dba330483e0b30a7e57e8d1aa244 SHA-256: 704fbfa6f1099023fbbbb1d204d682840da7fc59d7bf9c557fb2e549022a9663
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The document contains a large number of embedded links, many of which point to Shopify domains hosting PDF files, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.ru/pify?keyword=building+construction+book+bc+punmia+free+download+pdf, which likely serves as a gateway to further malicious content.

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.ru/pify?keyword=building+construction+book+bc+punmia+free+download+pdf
    • http://files.taraflyart.com/uploads/1/3/2/6/132695372/pelasur.pdf
    • http://files.jamesferris.ca/uploads/1/3/1/4/131454345/8261ad.pdf
    • http://files.genewildest.com/uploads/1/3/1/6/131636903/2597369.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/3387/8940/files/fagitemelibutisatidizuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/9745/6789/files/azure_developer_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0436/9534/1723/files/57296155419.pdf
    • https://cdn.shopify.com/s/files/1/0432/8521/7436/files/les_coliformes_totaux_et_fcaux.pdf
    • https://cdn.shopify.com/s/files/1/0434/7622/2118/files/googoo_dolls_iris_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/5716/8027/files/nukunawepekaj.pdf
    • https://cdn.shopify.com/s/files/1/0440/3278/6597/files/ffmpeg_remove_duplicate_frames.pdf
    • https://cdn.shopify.com/s/files/1/0428/7194/7423/files/84252063657.pdf
    • https://cdn.shopify.com/s/files/1/0428/5893/8531/files/blockchain_technology_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0433/8935/4149/files/jixewepijeviv.pdf
    • https://cdn.shopify.com/s/files/1/0434/2582/4929/files/vx_ace_rtp.pdf
    • https://cdn.shopify.com/s/files/1/0433/9800/4899/files/acute_renal_failure_treatment_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0439/3664/5275/files/xipipukebarojegefupe.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000683a.bin
cc2166618dee50ed676e92a2f5ff28aba71c3e420958d77cb50d4407ffbec629		 pdf-font-stream PDF embedded font (sfnt) at offset 0x683A 5820 bytes
font_01_sfnt_off00007c06.bin
33d80b5e357abfa3ea91f5eff18928953f8e36d8e9a7aea158c838e8ae756dd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C06 2116 bytes
font_02_sfnt_off000085d0.bin
c56780d859f913eccf51a4963f24f2ae1231a80cca863c193132a8c8a0c1592f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85D0 15188 bytes

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