Malicious PDF — malware analysis report

Static analysis result for SHA-256 d70145e5e50b391e…

MALICIOUS

PDF

33.3 KB Created: 2020-08-10 06:04:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4b6a1c88a4ac8fbb4835f7f253e2caf5 SHA-1: 6326725da42a3ca1dbed50dbfd02c616415b053e SHA-256: d70145e5e50b391ea392a4a157a262645ca046f4369508531006380927de43a2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for an exercise PDF. The primary malicious URL is ttraff.com, which is used to redirect the user to other locations, likely for further exploitation or malware delivery.

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.com/pify?keyword=passive+present+simple+past+simple+exercise+pdf In PDF document text
    • http://duzit.paduastore.com/uploads/1/3/0/7/130775350/bofarupiziruromegi.pdfIn PDF document text
    • http://files.nextstepsdaycare.net/uploads/1/3/1/3/131384777/satam.pdfIn PDF document text
    • http://files.writingbeyondmargins.com/uploads/1/3/1/4/131436967/9b52d6.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/1/0436/9884/7894/files/12076140884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0704/1958/files/subujejodezimizibaganute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9957/8773/files/discuss_multilingualism_as_a_resource.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/in_christ_alone_owl_city_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9090/2166/files/fojowewukonanetozuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/nugisonifujutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/2010_vw_jetta_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/mapa_mundi_para_pintar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/36283751979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3966/7877/files/kuxumudefanumosamiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/basketball_agility_ladder_drills.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5089/9368/files/96702375077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4605/0714/files/using_statistical_methods_in_social_science_research.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 4

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_off00004548.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4548 5428 bytes
SHA-256: d4869fde4c8cd678c11c597268822baf3b6ce605c14b23ce334aeb7d12d01b2c
font_01_sfnt_off000057b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57B3 9008 bytes
SHA-256: f3d50a908e8717c69bc3fd96ce7955efae6f6061569752c24cd1fa5f7bf1c8b5

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