Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb33bb7162af7c62…

MALICIOUS

PDF

40.3 KB Created: 2020-08-17 03:30:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 013b3ca9932075109581367241fe60d3 SHA-1: a5c13174306dcd5dbbbf6f2e365bf8e526055a22 SHA-256: fb33bb7162af7c625c4b33850c6b006df99bef08df4528a4ba0534c279adc615
214 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and a large number of links, including one to a known malicious redirector. The PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics indicate that the document is designed to redirect users to malicious infrastructure or to manipulate search engine results. The embedded JavaScript likely serves to further obfuscate the malicious intent or to initiate a download. The primary malicious IOC is the redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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=banff+sunshine+snow+report In PDF document text
    • http://files.tulipcity.org/uploads/1/3/0/8/130874433/fuxugeni_ferulepav_lagomeji_luwuvukaru.pdfIn PDF document text
    • http://dabinula.witeaze.com/uploads/1/3/2/3/132302857/pilunikesuxa.pdfIn PDF document text
    • http://zonon.susanlane-gardenscapes.com/uploads/1/3/2/6/132695663/pajapiluxop_kibebuz.pdfIn PDF document text
    • http://files.heartlandfeeding.com/uploads/1/3/2/6/132681294/140417cf.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/1/0432/2315/4850/files/product_evaluation_report_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4460/8932/files/virtualbox_exit_scaled_mode.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2258/0886/files/10604941704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/26862209297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/bimijixop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/79086120326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/34048005765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6305/8340/files/gumanisawofibikizugif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0131/4454/files/convert_to_word_online_zamzar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65788935473.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 3

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_off00005f54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F54 5096 bytes
SHA-256: 206d64ac7ad87c95ca65123c2a6458e8c5efca1aa58a58c3f389e17691ecc53c
font_01_sfnt_off000070b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70B4 10460 bytes
SHA-256: e412bcd9e66725fca0e4c829beadbbe05e0e2f6546562c7ac90baa569ceb8bba

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