Malicious PDF — malware analysis report

Static analysis result for SHA-256 876c7cd599eae4e2…

MALICIOUS

PDF

43.7 KB Created: 2020-08-15 00:50:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6861b837705a990a0189e9b24dce749c SHA-1: 9a3b49b59c7dc502859a1fa1bc906dbfa2021e64 SHA-256: 876c7cd599eae4e216e71935b1a7cac873b0a5481623beaa5506a39db1a8d434
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service that is known to host malicious content. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=demonstrative+pronouns+picture+worksheet', which is flagged as a malicious redirector. This suggests the document is designed to trick users into visiting malicious websites, likely for phishing or malware distribution.

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=demonstrative+pronouns+picture+worksheet In PDF document text
    • http://files.seaspalife.com/uploads/1/3/1/6/131637240/8650119.pdfIn PDF document text
    • http://darilote.australiasmedium.com/uploads/1/3/1/4/131452922/513479.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/1/0433/0687/7080/files/rapuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/57225734966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3110/1603/files/nugokukumurejuxoja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2032/8853/files/sesosapevokifokopimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7661/6353/files/84869035877.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5366/2883/files/autocad_frame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/74828798350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5706/1788/files/fidevoxizinonukuxoganek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8770/files/72648069192.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/can_you_qss_vi_ult.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 1

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_off00005f60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F60 5236 bytes
SHA-256: fb754de0318625df08e57ddf89ead7cc78f194b14f380561314c28923b6fce25
font_01_sfnt_off00007118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7118 10160 bytes
SHA-256: 30bb89814deb8eec876f253a502fb31b5d10fab61dddf4b74720fc5ec77d4b88
font_02_sfnt_off000093d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D6 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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