Malicious PDF — malware analysis report

Static analysis result for SHA-256 61bb3b0f4900cdd3…

MALICIOUS

PDF

54.4 KB Created: 2020-08-19 21:08:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ecc12e84cc4f13cd0e7cbe8b95a12eb2 SHA-1: 7d1c55c206de143c327d42fa623ba530a56c7a22 SHA-256: 61bb3b0f4900cdd319807d31c44c02831c0384dd7a668e890f0e010165ea2e31
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including a critical redirector link to 'ttraff.com', indicating a malicious intent to direct users to potentially harmful content. The heuristic 'PDF_SEO_LINK_FARM' further suggests a large number of external PDF links were generated, likely for SEO poisoning or to obscure malicious destinations. While no scripts were extracted, the embedded URLs and the PDF structure strongly suggest a phishing or malicious redirection attack.

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=branches+of+physics+pdf In PDF document text
    • http://files.hebshf.com/uploads/1/3/1/3/131379899/9084a554c.pdfIn PDF document text
    • http://files.davidslandscapes.com/uploads/1/3/1/3/131380000/basinafulizepet.pdfIn PDF document text
    • http://moweg.hardawayhighband.com/uploads/1/3/0/7/130776716/lifutimetepi.pdfIn PDF document text
    • http://files.littlecharliesbakeshop.com/uploads/1/3/0/8/130814935/6067749.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/1/0431/2124/6359/files/lawerujirisuduf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6561/files/76189806238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8034/3967/files/minority_report_plot_summary_spoiler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1380/5992/files/99468553795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/30272939265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/gonisuketa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/at_long_last_asap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0735/0696/files/mirror_pressure_cooker_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/kamegilaruvetexalonenewov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3979/3050/files/76494210206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9626/8193/files/saint_john_perse_anabasis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4099/5490/files/gofosuromexijekemojonizo.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_off00007e5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5E 5360 bytes
SHA-256: 8a84435aafc0cc3eeca68ca93dd0e4004d81f40785174126b0878fcf6b9a9ff9
font_01_sfnt_off0000908d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x908D 11348 bytes
SHA-256: 025fe71ccc969531e0313d37b3846731d0e79e6acdaad9ec2bbbba4aa4ba9c1e
font_02_sfnt_off0000b758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB758 16108 bytes
SHA-256: 647fa2c693c8ab21cc25743b8708e2ebf080f540c0660d69714ab6ec7e0111fb