Malicious PDF — malware analysis report

Static analysis result for SHA-256 888ea3ef4e2efccd…

MALICIOUS

PDF

211.8 KB Created: 2020-08-09 06:50:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c096979fd217c3bcc90ef3b864e0ba2f SHA-1: 831690c02aeeb30d3d0e7fb14f179f0998bdbda5 SHA-256: 888ea3ef4e2efccd55055502236619163acb896b72b97000f52b95f1272c4e94
134 Risk Score

Malware Insights

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

The PDF contains a link disguised as educational content ('vocabulary words for 6th graders pdf') that redirects to a known malicious URL. This indicates a phishing or malware distribution attempt, likely delivered as a spearphishing attachment. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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.
  • 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.ru/pify?keyword=vocabulary+words+for+6th+graders+pdf In PDF document text
    • http://files.southdownmethodistpreschool.com/uploads/1/3/0/8/130813364/xetetuba.pdfIn PDF document text
    • http://files.simplycandleco.com/uploads/1/3/0/8/130873741/2873644.pdfIn PDF document text
    • http://files.michellemcdanielportfolio.com/uploads/1/3/1/3/131380467/bubusasoxez_lefilenefiv_jodefaxedavuw.pdfIn PDF document text
    • http://files.charliecalvert.net/uploads/1/3/0/8/130874205/dalenixedigozuk-sagirejimeba-kasiwigexiju-lixed.pdfIn PDF document text
    • http://files.trustableslut.com/uploads/1/3/2/7/132740249/edb811c5b1855.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/1/0431/6512/2711/files/bruker_s1_titan_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/22605601243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7165/8389/files/basics_of_data_communication_and_networking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/8436/2407/files/cheddars_menu_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8161/3987/files/58682572800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0923/5353/files/berilufufitejutugupig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1701/7243/files/ranekedodibebasotetiwile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0718/8898/files/24504940496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/90921560960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/45187124318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9756/3037/files/xorakozopawuxilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/95509007145.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
🗂 Part of campaign: charliecalvert.net 6 samples

Related samples 8

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_off0002f56e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F56E 5596 bytes
SHA-256: 6ad217737c360f4621261a1f8c8c27252622a6cba7152e5eb8130da99540e6ec
font_01_sfnt_off000308a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308A6 13404 bytes
SHA-256: 7381a78f0f1f99a81ed34e8fa61b82174dac78b4d4486b941f8f5c932cc65bd0
font_02_sfnt_off000332c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x332C7 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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