Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c7051dbb7fbb6f…

MALICIOUS

PDF

40.7 KB Created: 2020-08-03 05:38:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3194ba8c866f269bc49ddf2142bcf8c0 SHA-1: 00f9593ff3ebe55dd9934ead8c5c63d9217480dc SHA-256: 45c7051dbb7fbb6f8f4d647ca56d6fd1df740d489edf3d1bdce516a8f03fb3e4
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to ttraff.com, suggesting a link farm or phishing lure. The document body, though partially corrupted, contains text related to 'Ubuntu 14.04 repository list' and embedded URLs, reinforcing the lure. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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.com/pify?keyword=ubuntu+14.+04+repository+list In PDF document text
    • http://files.yunkawasiperu.org/uploads/1/3/1/3/131379612/vizarifogumawov.pdfIn PDF document text
    • http://files.coppercliffnotes.com/uploads/1/3/0/7/130740092/53e267a34b9aea.pdfIn PDF document text
    • http://files.georgianavs.com/uploads/1/3/1/1/131163512/3866251.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/1/0429/9682/6273/files/27274625637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5689/6927/files/89929330521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/headway_beginner_test_booklet_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0889/1807/files/2061961142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9155/8551/files/dofutazug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1917/2000/files/kamanalatab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/83194745229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5663/6828/files/39915284215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9074/6267/files/pubet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5586/6263/files/nixeribexu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9944/6693/files/77973117933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/dipodisokogonukurikawem.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 8

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_off000060ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CA 5152 bytes
SHA-256: 496cb18f6d8fcdb1530791057b56fbe6b9eaf5c41fec0b9d22c1d2ca02bab84a
font_01_sfnt_off00007277.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7277 10512 bytes
SHA-256: 587b0f2a24dc2d16648fa8a8bd1e96a8f7ee1a53260be6dd3a19543a86359488

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