Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc0f44e4a76ec10…

MALICIOUS

PDF

33.4 KB Created: 2020-08-12 15:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b4f91c2a2dbf3d99645126c29bb91f4c SHA-1: ed88bf33550718814a39cdf8ca256ee741607ca3 SHA-256: fcc0f44e4a76ec105415423664c07a1f4ff2121be00a7d8ad694b7a96c005ec2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a significant number of embedded links, with one specifically identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting an attempt to manipulate search engine results or distribute further malicious content. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.ru/pify?keyword=tafsira+quran+afaan+oromoo+pdf In PDF document text
    • http://files.delandhsband.com/uploads/1/3/1/3/131379700/5821082.pdfIn PDF document text
    • http://xumomosa.illuminatingbirth.com/uploads/1/3/0/7/130776445/milisizetis.pdfIn PDF document text
    • http://files.broadviewcottage.com/uploads/1/3/1/6/131606262/3892231.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/1/0428/8443/2038/files/64592905923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2755/2661/files/jofob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2152/5407/files/arithmetic_sequence_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/94264477765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6232/files/92840458608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6318/8383/files/kovedukakedenifafakiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56751463133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3518/1734/files/unprotect_word_document.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2440/6933/files/75666526628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4016/9366/files/97376053989.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 1

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_off00004595.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4595 5232 bytes
SHA-256: 303f76e059c671d8a1c50791d9af70ea74e6e783656c948e96b001857a1009bc
font_01_sfnt_off00005744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5744 9920 bytes
SHA-256: 0a433a69e56129bad718b123e7b377e72b3b08f49e566f3994611769f8199cc2

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