Malicious PDF — malware analysis report

Static analysis result for SHA-256 a33d3631b3bce744…

MALICIOUS

PDF

148.5 KB Created: 2020-08-04 14:45:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4875f5fe606f9a3e52f218906008de9a SHA-1: 80fc665674f4d50f7de01edf43b3cfe3a1ebf716 SHA-256: a33d3631b3bce744ccdb16785c51415535f1aaabc0f1bf6cb2891e89487dd004
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=manual+pr%25C3%25A1ctico+del+operador+de+calderas+industriales+pdf'. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. The file's purpose is to redirect the user to this malicious site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.com/pify?keyword=manual+pr%25C3%25A1ctico+del+operador+de+calderas+industriales+pdf In PDF document text
    • http://files.jewellhealingsource.com/uploads/1/3/1/4/131453530/wokovemez-gotipugajes.pdfIn PDF document text
    • http://disuximu.revjeremiahrood.com/uploads/1/3/0/9/130969060/dafivimikurakasa.pdfIn PDF document text
    • http://polafonat.adorote.org/uploads/1/3/1/4/131408024/misuduzelononezevine.pdfIn PDF document text
    • http://files.centralmissouricarpenters.org/uploads/1/3/2/6/132682124/sigirabas.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/datofugilasififuko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9232/8104/files/65477069777.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/95121114204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/furulojosoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6208/3232/files/sazexetimenujawot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3590/1602/files/82703291678.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7382/1082/files/vupiboselodudejar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8356/3162/files/representational_state_transfer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9411/4453/files/motovizozulidovin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/82278819201.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 5

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_off0001e919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E919 5272 bytes
SHA-256: 828d9be2834f79c6e86865816a8fbc4dee17942d2979499c9042a99a0c1d76f7
font_01_sfnt_off0001fa79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FA79 18968 bytes
SHA-256: 3aa36d8fbe08ab9153070a5ad8222d5c8bb7b9f78780a1faa57a2be5936c77e3
font_02_sfnt_off0002336b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2336B 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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