Malicious PDF — malware analysis report

Static analysis result for SHA-256 aedf54cdd8057cf9…

MALICIOUS

PDF

72.5 KB Created: 2020-08-25 00:15:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 723a23826f348bedab7fa2684187e137 SHA-1: cbd16b86498916fc3f26b51b92cb0ad2b3e96fd3 SHA-256: aedf54cdd8057cf9b73b31f5787292e59f637adf57f1271ee13524c17f8b4d86
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, identified as a 'PDF_SEO_LINK_FARM'. One of these links, 'https://ttraff.ru/pify?keyword=cf+auto+root+g610m+android+8.+1', is flagged as a 'PDF_MALICIOUS_REDIRECTOR_LINK'. This suggests the document's primary purpose is to lure users into clicking malicious URLs, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cf+auto+root+g610m+android+8.+1 In PDF document text
    • http://files.cochrantonfair.org/uploads/1/3/2/7/132740536/mewekarukesewe.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/1/0437/7139/6257/files/aseptic_technique_microbiology_lab_report.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7537/1162/files/pdf_to_dwg_converter_software_free_download_full_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9529/3094/files/human_body_parts_name_with_picture_in_marathi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pujar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7283/0105/files/how_to_cite_found_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9780/8279/files/tutorial_cade_simu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/dimarotovelukopijisopex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7977/8979/files/vobuxokopexowisotepisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0384/4520/files/venetinato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9816/8725/files/93103850218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0503/files/62544328563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/wusigefigera.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bcc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC9 5496 bytes
SHA-256: 5129063bef353c826bd407c767cef08f05ca9c59b8e505ab27dae3498364285a
font_01_sfnt_off0000cf6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF6B 15000 bytes
SHA-256: 41b8261114071d13786965bfc4fed8e1164df63746b8a256dc4c745de7ab7046
font_02_sfnt_off0000fe6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6B 16464 bytes
SHA-256: c982f799ccf285feddf0f41a399be9b4785a41081b4cb79ba98114c42c9d8f38