Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ddca8d5f676a07c…

MALICIOUS

PDF

42.3 KB Created: 2020-08-17 14:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a681aad1992fa892f01850a8bf9e522f SHA-1: c8a8e5190b2ee29274fd1d06010953be8eaf6e42 SHA-256: 0ddca8d5f676a07c4a96137b37c9556911e0017ec89e77106e87009dbcbbaf3b
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The primary redirector URL is 'https://ttraff.cc/pify?keyword=adjective+worksheet+for+class+4+pdf', which is likely used to obscure the final destination and potentially engage in SEO poisoning or phishing. The document body, though heavily obfuscated, also contains this URL, suggesting it's the intended lure.

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=adjective+worksheet+for+class+4+pdf In PDF document text
    • http://files.okiegirlscoffee.com/uploads/1/3/1/4/131437822/6901243.pdfIn PDF document text
    • http://files.nickpateras.org/uploads/1/3/2/7/132710655/d914f150ae.pdfIn PDF document text
    • http://fuvozosu.washingtoncountylivestock.org/uploads/1/3/1/3/131384016/xarenitematakub.pdfIn PDF document text
    • http://files.candaceclift.com/uploads/1/3/2/6/132695347/9123736.pdfIn PDF document text
    • http://files.14thstreetvintage.com/uploads/1/3/0/9/130969703/c1454.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/1/0431/9094/3902/files/imperialismo_resumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6219/7400/files/rational_and_irrational_thinking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/grey_science_factorio_blueprint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7506/6273/files/73394992928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8612/7009/files/nalibopuranijamurujepel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2859/3315/files/30161126349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4833/6536/files/14059571219.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2973/3282/files/wabiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1906/files/all_aarti_sangrah_in_marathi_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4874/6651/files/awg_to_mm2_current_carrying_capacity.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 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6654 5612 bytes
SHA-256: 38178bbff73a86c864ee579b1f3ec5ba39eec574596c75b8eb6d80b801152147
font_01_sfnt_off00007981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7981 10132 bytes
SHA-256: 4c9273aaa3700cf3bd866ae5d410a4a91e39e39fc254c0ad20f33cf62a079375

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