Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ed31377d554cfbd…

MALICIOUS

PDF

52.4 KB Created: 2020-08-07 09:41:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5230041ff6f56f27e86eb4a3d7835b8f SHA-1: b0e03dde73f4e3e2c0a343e6d04c9090359b6c07 SHA-256: 6ed31377d554cfbde5b3246041bf07eeddc92ff37967a3c632d9fe214c4f5319
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains a large number of embedded links, many of which point to a redirector service that is known to host malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=national+antibiotic+guidelines+2020+pdf+doh', which is also flagged as a malicious redirector. This suggests the document is part of a phishing or malware distribution campaign, likely using the 'free download' lure.

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=national+antibiotic+guidelines+2020+pdf+doh In PDF document text
    • http://xajigova.hoggardstudentservices.com/uploads/1/3/1/6/131636664/jiwiwomevu.pdfIn PDF document text
    • http://files.yauponberrypress.com/uploads/1/3/0/9/130969368/e91cbf41d.pdfIn PDF document text
    • http://files.dsldaquascapes.com/uploads/1/3/1/8/131856498/6967434.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/1/0434/3191/9765/files/jebedepesedutorerivaraf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/xobowevaloboleri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/4980340072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1090/8572/files/30604025245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6710/3645/files/3845368248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5359/6310/files/64352637984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/30313671617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/23915643371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/easy_steps_to_bossa_nova_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6148/4437/files/spektrum_dx6i_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/mathematics_worksheets_for_class_1.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
🗂 Part of campaign: domesticfabrics.com 4 samples

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_off000083a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A9 5704 bytes
SHA-256: d38efe54d464821fe1f711f2c529d4140d05ad6160f7040684e0724ee6f97a9f
font_01_sfnt_off00009713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9713 14436 bytes
SHA-256: 84b7a3cebc178e8a09cdc2d81726e54eb3cb919d46fc097d0a31cbb994cfe8fd

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