Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd5a1938ca8d32ac…

MALICIOUS

PDF

36.2 KB Created: 2020-08-14 22:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5346e1a56c37028d90b61d235493ff4b SHA-1: 10be92d2f621d34f1912f17f2e55d1767d8485fc SHA-256: dd5a1938ca8d32acc3bf0d094775e8d41fbb80f8602d69cf3731bc6aeb840aa3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL, https://ttraff.com/pify?keyword=nelson+grade+12+chemistry+textbook+online+pdf, is designed to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains this URL and other links, suggesting a social engineering lure to disguise the malicious intent. The presence of multiple shopify.com links, some flagged as benign and others unknown, indicates an attempt to blend malicious links with seemingly legitimate ones.

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=nelson+grade+12+chemistry+textbook+online+pdf In PDF document text
    • http://files.shopthepoint.com/uploads/1/3/1/4/131406518/modoxamovedon.pdfIn PDF document text
    • http://files.cptoffice.com/uploads/1/3/2/6/132681757/9440114.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/1/0439/7685/1614/files/mf_135_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0390/3127/files/20216215803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7214/4038/files/zaduwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8197/3403/files/kohler_magnum_18.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9645/files/givulanowuditu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0845/8905/files/diferencia_entre_cefalohematoma_y_caput_succedaneum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37394074323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2655/3755/files/keronibinatulujejikixutam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/sisaziwem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5529/0270/files/clinical_biochemistry_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6832/5029/files/navezarijubijuxufopap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9816/7713/files/90178380656.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/42464840289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7767/2868/files/america_s_history_8th_edition_online_textbook_free.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 5

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_off00004ad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AD7 6096 bytes
SHA-256: 24a3d41cb4ce5de5104d809ddd97b0d31f4c0f677126fe16e83bf29161e85ac3
font_01_sfnt_off00005f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F81 10560 bytes
SHA-256: a624a40f15589f4036ccf7616b8660e1cedbfd52c9ae4fd311600de3072082be

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