Malicious PDF — malware analysis report

Static analysis result for SHA-256 123e87a513389664…

MALICIOUS

PDF

40.0 KB Created: 2020-08-17 04:50:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e59534fbed7812f9e80c6a2555daab3 SHA-1: 7c0c544109e66f5b7f71ee2709b7d38806f06d9e SHA-256: 123e87a51338966469dc7b0f015f785a1260ac853fbb2d0fa94023046ccdc60e
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to an SEO redirector farm. The primary redirector URL, https://ttraff.ru/pify?keyword=portugu%25C3%25AAs+para+todos+pdf, is flagged as malicious and likely serves as a lure for phishing or malware distribution. The document body, though heavily garbled, contains this same malicious URL, reinforcing its role as a deceptive 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.ru/pify?keyword=portugu%25C3%25AAs+para+todos+pdf In PDF document text
    • http://files.greenphilsinc.com/uploads/1/3/1/0/131069906/da3c2.pdfIn PDF document text
    • http://files.runningrabbitfarm.com/uploads/1/3/2/8/132816202/ralomuxafojakigixef.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/1/0437/8994/2945/files/ncert_biology_class_12_notes_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7432/9507/files/livukugezegexekotupune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/24375498268.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9736/6436/files/orthographic_projection_basics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3492/7513/files/nekomejopize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3512/2081/files/arabic_dictionary_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/75716538434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0941/6095/files/rc_model_airplane_design.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/vuwekimexom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4781/2248/files/96505143838.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7951/3752/files/khasiat_bayam_merah.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A19 5328 bytes
SHA-256: 10d7fe7883dfafb641236a33067e6141dd4ef1659a659d0c8095ae2724c5f519
font_01_sfnt_off00006c0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C0A 12392 bytes
SHA-256: 852d4bc6bc7796120730bdea394a17798265a855e87557807db09445100a4f1a

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