Malicious PDF — malware analysis report

Static analysis result for SHA-256 97650aa1bf83779b…

MALICIOUS

PDF

38.2 KB Created: 2020-08-23 17:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 565ec3b55326648d3d9d84624b3c4618 SHA-1: a261f73fb6c0e45744b6c900e52e1e5a7c93f2fd SHA-256: 97650aa1bf83779bf745ab3aa207672c85660fd5be3ac07b4c1aac66b7b6135f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting it is a worksheet with answers, likely a lure. The presence of a link farm and a malicious redirector indicates an attempt to drive traffic to malicious infrastructure, potentially for further exploitation or phishing.

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=geometric+sequence+worksheet+answers In PDF document text
    • http://degozojix.12stepspirituality.org/uploads/1/3/1/8/131871864/figorajoditu.pdfIn PDF document text
    • http://baduvov.jacquelinecutler.com/uploads/1/3/0/8/130814229/76e426f43da.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/1/0434/6976/6821/files/zawuzuzobemixugojim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8521/files/ziketeranozu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3461/3659/files/78704215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/macos_catalina_10._15_final_dmg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8740/4968/files/jopisuzanajar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1987/8048/files/angry_text_faces.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2970/7422/files/actinomycosis_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0329/3346/files/ubqari_magazine_may_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5476/8021/files/9775089030.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_off00005734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5734 5320 bytes
SHA-256: 5cab9264c46a7ddfde077c3562a56b626c44b78fecbc52f2d8d8735cd7bffc0c
font_01_sfnt_off0000693a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693A 10272 bytes
SHA-256: af5585e9492e6325817884917ff4408e333b0142af8b13dfb6e0e34bdeaf24c2

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