Malicious PDF — malware analysis report

Static analysis result for SHA-256 948db8cbd8260d3b…

MALICIOUS

PDF

46.4 KB Created: 2020-08-12 04:17:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1e207ae04f8e497ecbc8d4544a33de2 SHA-1: 6359d3e61d765e7287a73fb09458ae4d7416c928 SHA-256: 948db8cbd8260d3b95602b073e8d72edee66171d8bc3b88a0e70d194b1f37b2a
194 Risk Score

Malware Insights

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

This PDF file contains numerous links, many of which point to a redirector service known for malicious activity. The primary redirector URL is 'https://ttraff.cc/pify?keyword=conjunctions+worksheets+5th+grade+pdf', which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, contains references to 'conjunctions worksheets 5th grade pdf', suggesting a lure to trick users into downloading potentially harmful content. The ML classifier also strongly indicated maliciousness.

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.cc/pify?keyword=conjunctions+worksheets+5th+grade+pdf In PDF document text
    • http://mojuz.unitedmissionsofhope.org/uploads/1/3/0/8/130814328/riwopela_zimulolowuk_safasapo.pdfIn PDF document text
    • http://files.kingskidzchristianpreschool.net/uploads/1/3/1/4/131438137/5744897.pdfIn PDF document text
    • http://files.merynncandles.com/uploads/1/3/1/1/131164202/soliz.pdfIn PDF document text
    • http://fifono.drbarrnd.com/uploads/1/3/1/4/131453574/7609047.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/1/0429/8155/6375/files/miraie_osu_skin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6574/4287/files/benzodiazepinas_en_el_anciano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/69927599241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/measurable_organizational_value.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1634/8057/files/58629660901.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5475/9065/files/68618390730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6473/7448/files/20721724876.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/54521942969.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3402/3848/files/circulacion_utero_placentaria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7892/4953/files/28411026210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7301/0845/files/mawedivas.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EB 5648 bytes
SHA-256: 5ca3070b49acee04a3605a99d68af00428a67d22fc3fa3bd53a3a515a3d97e0c
font_01_sfnt_off00007b41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B41 10296 bytes
SHA-256: 4e449bb2252c6d670932fe82371141027249634ab7e68307fff25613c836f74a
font_02_sfnt_off00009e98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E98 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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