Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7e7fd67c8e5a70c…

MALICIOUS

PDF

33.3 KB Created: 2020-08-08 14:32:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3bcfe87e872fc92f1afdf7199e776391 SHA-1: 396f4e4ed6316261aa9b5fa73fd4c885adf2ec83 SHA-256: e7e7fd67c8e5a70cff585e92864e1764b9fd5cfc45790ab37805c1c18e9b4ec7
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.com. The document body, though partially corrupted, includes text suggesting it is related to 'Oxford discover science 3 pdf', likely a lure to encourage clicks. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the redirector.

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=oxford+discover+science+3+pdf In PDF document text
    • http://files.youthdigital.com/uploads/1/3/1/8/131871477/butojafes.pdfIn PDF document text
    • http://files.allbookedup.ca/uploads/1/3/0/8/130874317/mitixagiduv.pdfIn PDF document text
    • http://files.dogwaydogrescue.org/uploads/1/3/1/4/131452861/1960213.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/1/0433/3692/5342/files/2599421324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4635/3561/files/boxudebexetenabavelulun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1624/9767/files/garmin_dezl_770_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6618/6135/files/muxenigereje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6858/8194/files/fisigiretutigolased.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5675/1002/files/vevewesimaroboretavujegi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2974/2246/files/adding_fractions_coloring_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9799/7991/files/22219681929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7692/0220/files/prodigy_brake_controller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8413/6086/files/39129553345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1534/7103/files/cards_against_humanity_with_pictures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6244/2661/files/bozijufudolotizukulini.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4544 5224 bytes
SHA-256: df7061bf119531474eb7fa3ae373416c378b2da9d4d251cb610c5d05ac67622c
font_01_sfnt_off0000572e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x572E 9720 bytes
SHA-256: b4070c586bc249676f4f895af0ba81793e09e748740fe04b355cdfe7f4b307c4

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