Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d25f9fe79333845…

MALICIOUS

PDF

80.3 KB Created: 2020-09-16 19:30:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ae4da4c0ff7694f6eeb5cb7874b8da2e SHA-1: c9feae477a1ee4f2a9a2582e5af907f8a44b8b1f SHA-256: 4d25f9fe79333845996bf43017a3821c735cb08df3a59008c84dac787feaac53
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with critical heuristics identifying it as a malicious redirector and a link farm. One of the embedded URLs, 'https://ttraff.link/wix?keyword=d%2526d+curse+of+strahd+maps+pdf', is specifically flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL, indicating its likely purpose is to direct users to malicious infrastructure. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or redirection attack.

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.link/wix?keyword=d%2526d+curse+of+strahd+maps+pdf In PDF document text
    • http://files.centraloregonfillyourpantry.com/uploads/1/3/2/7/132740424/7488684.pdfIn PDF document text
    • http://lezedoxed.lafesmith.com/uploads/1/3/2/6/132695424/3463828.pdfIn PDF document text
    • http://files.goochipoochi.net/uploads/1/3/2/7/132741352/vegotomupenit.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/1/0433/9813/5966/files/46744207844.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0845/7885/files/kathi_love_bgm_masstamilan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1425/8851/files/nogizudixurumixev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5816/7959/files/color_by_number_addition_and_subtraction_1st_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6803/8047/files/el_existencialismo_es_un_humanismo_ensayo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6114/9850/files/ufc_226_performance_bonuses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0555/8174/files/3949004722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8885/5718/files/software_reliability_engineering.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6337/8081/files/lidopalivexiradogod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/2321/7318/files/41366875323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/lilusefobudamudenok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0554/0509/files/zuvuxekagulefotoxuguxaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/darrell_sheets_instagram.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4BF 3484 bytes
SHA-256: 866fd8f85cd0130a59e26d5d2ef72782554194052287c2ce3d346dbb443db71f
font_01_sfnt_off0001002c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1002C 11796 bytes
SHA-256: acc74901c1c09107bb7d46c62efa714779ea9a8dea79575404be36d0f9d38688
font_02_sfnt_off0001263b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1263B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e