Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd263426d40a2e67…

MALICIOUS

PDF

55.1 KB Created: 2020-08-06 21:35:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4a75efdc5e47ec21d5691fba8813c543 SHA-1: b21a8e11158a605543c9bc7e3d697a1780a7ad27 SHA-256: dd263426d40a2e674f9269e2f1a327d777ba2f35d340807a88ee83f21dbf652e
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'B.ed syllabus 2019-20 pdf', suggesting a lure to disguise the malicious intent. The primary malicious URL identified is https://ttraff.com/wb?keyword=b.ed%20syllabus%202019-20%20pdf, which likely leads to further malicious content.

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/wb?keyword=b.ed%20syllabus%202019-20%20pdf In PDF document text
    • http://files.sass-and-crafts.com/uploads/1/3/0/8/130815213/puwakujojavulazamad.pdfIn PDF document text
    • http://files.climatechheatingcooling.com/uploads/1/3/1/3/131398423/c3fec48.pdfIn PDF document text
    • http://files.lonsdale-estate.co.uk/uploads/1/3/1/4/131437770/7476893.pdfIn PDF document text
    • http://files.eastbrooklynhousing.com/uploads/1/3/2/6/132696323/bd315056bd9dd37.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9452/4579/files/vutisojomuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9784/files/wozufisewikenexowatupevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1637/2892/files/amplified_bible_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/nepow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/bilusowep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/lagobebewaborovivoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6385/9610/files/74620737074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8251/3561/files/english_alphabet_worksheet_for_kindergarten.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4035/9068/files/xikewizunotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/44506069042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4572/5094/files/53244247917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7198/0198/files/knapsack_dynamic_programming.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFB 5312 bytes
SHA-256: 8881448fa43af4d7bc23b887c1ce0d1a3ede8d192ba01fc1ff8196311fca4733
font_01_sfnt_off00008025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8025 14096 bytes
SHA-256: 2d302a408b8360cebe8c30f920b073654e1218e87d457079633c35250bcff28d
font_02_sfnt_off0000abee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABEE 16092 bytes
SHA-256: 0be84d2d0547f1f02aa0071b49020aaa73ac7e6a4c4dee27a4da8627c6f2d0ef
font_03_sfnt_off0000c0b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B3 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd