Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dfc67cec109564b…

MALICIOUS

PDF

47.1 KB Created: 2020-08-15 16:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0b4a61ea9906d3e3dbc7b1457a845c01 SHA-1: b1d974e0a9a5a7653e2a18d6d57b738fc16e72bc SHA-256: 2dfc67cec109564be2d6a3569881f637b6abebc196fe4663aff34b4cb0dbe4b1
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains URLs that appear to be part of a link farm. This suggests the document's primary purpose is to lure users into clicking malicious links, likely for phishing or malware distribution. The ML classifier strongly supports the malicious verdict.

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=freemake+video+converter+pro In PDF document text
    • http://files.mrc-k9.com/uploads/1/3/2/8/132814343/garov.pdfIn PDF document text
    • http://fofitud.walshinthecloud.com/uploads/1/3/1/3/131383483/sejusisofara.pdfIn PDF document text
    • http://wazimo.hartfund.org/uploads/1/3/1/3/131380600/tekif-riwasew-genul-guromegejijolav.pdfIn PDF document text
    • http://files.synergyhairandbeautyelloughton.co.uk/uploads/1/3/1/4/131437194/364f6f8.pdfIn PDF document text
    • http://voxim.natepage.com/uploads/1/3/1/3/131383309/gebowijifuniduwiwod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8507/7405/files/molepemezukusos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1116/2790/files/tojifonevubenapubixoforif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3754/7929/files/15_minute_binary_options_strategy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5653/7493/files/similar_triangles_worksheet_grade_9.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3167/3502/files/90978548486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasidobedibugamis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5601/files/63880107619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/chiang_kai_shek_biography.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 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE4 4876 bytes
SHA-256: c98260f6068467b529c2a6648a0f50911c60d351ca2f1f7adef3e17f1235b0f7
font_01_sfnt_off00007d60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D60 10580 bytes
SHA-256: f872a6b81a3a7c9baa78fa8c8e8074ccef71805bcf824d918c7d50d3e2bd633c
font_02_sfnt_off0000a19d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA19D 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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