Malicious PDF — malware analysis report

Static analysis result for SHA-256 606b0f73788c47c9…

MALICIOUS

PDF

46.5 KB Created: 2020-08-09 20:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2cc9a845929f58662bc8a0cac15b35f7 SHA-1: e73eea77d743109f72ebe37e342a7889c26e8b90 SHA-256: 606b0f73788c47c9aed2c681307c37a4ab2acf6385bde79250cc4a84ce198a05
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with one prominently redirecting to a known malicious infrastructure at 'https://ttraff.com/pify?keyword=foskor+bursary+application+form+pdf'. This suggests a phishing or scam attempt, likely using the 'bursary application form' lure to entice clicks. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious destination. No scripts were extracted, but the PDF structure and embedded links strongly indicate malicious intent.

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=foskor+bursary+application+form+pdf In PDF document text
    • http://files.wilywestproductions.com/uploads/1/3/0/8/130814411/wabusimolofan.pdfIn PDF document text
    • http://files.reflexologylymphdrainage.co.uk/uploads/1/3/1/4/131453060/a3f9b2d01196.pdfIn PDF document text
    • http://files.laurennicoleanderson.com/uploads/1/3/0/8/130874676/17d2a31e1.pdfIn PDF document text
    • http://files.larissafall.com/uploads/1/3/0/9/130969873/namoralonosufirif.pdfIn PDF document text
    • http://files.milehighed.org/uploads/1/3/2/6/132681513/b18cace.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/1/0437/5327/5546/files/vikelijajegapemidixewufab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/88407623952.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2295/8248/files/mckinsey_capacity_assessment_grid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/zasavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4227/4454/files/nivadenanexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0433/8074/files/51424166553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1820/7911/files/tugegal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3725/3023/files/bioelectricity_a_quantitative_approach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/indiana_st-_105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7309/3288/files/xutenerigoxegejim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1579/7917/files/88348349136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1023/6321/files/65117543645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/cormyr_the_tearing_of_the_weave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6566/1845/files/97428286948.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000762f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762F 5564 bytes
SHA-256: 35a7dcb4d1e8eb0f59353cbb894668997863cef673f4bec29533f97db9eadbb7
font_01_sfnt_off00008913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8913 10512 bytes
SHA-256: 82c68f3db0077433415dfcf38594137ddca2a11948dea4bf8322c1aadcd37008