Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d4ace531fe6cefc…

MALICIOUS

PDF

36.7 KB Created: 2020-08-14 19:09:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d46ab830ecde3f19a07066c847e43c0 SHA-1: 9c8533751f2429f044dbe70acb46e9127a922ad8 SHA-256: 2d4ace531fe6cefc4be62758c1571728cb8a1eb63bdf2c8174a0378110aab677
194 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, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be related to the malicious URL. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through numerous seemingly benign links.

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://ttraff.cc/pify?keyword=afshan+zaibi+all+song In PDF document text
    • http://files.nostrings.co.nz/uploads/1/3/0/8/130874382/xemuvag_kumedo.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/1/0438/8447/8632/files/fumarezoxos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3389/2763/files/balsamo_bengue_bula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4529/8080/files/list_of_past_tense_and_present_tense.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/3259868017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6446/7357/files/email_format_html_or_rich_text.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9724/1240/files/sabuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1385/7692/files/83616202217.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5611/1520/files/buroru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6657/files/66417645598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6726/0582/files/goleroviwubogitetewubexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3245/3015/files/86022462063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/17570033430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2891/4074/files/51854478794.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000492b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x492B 5112 bytes
SHA-256: 2f6c51cb59d4bc264efb72e567a487f298c0ffa9655cdf91dbedeacaf4cf86f7
font_01_sfnt_off00005a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A94 13576 bytes
SHA-256: 5d44b524d8540a25e74460c447d7a7854bb73ec6c6d64e7a426b2ea0a6020b2b

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