Malicious PDF — malware analysis report

Static analysis result for SHA-256 a333b61f37cd679b…

MALICIOUS

PDF

40.4 KB Created: 2020-08-12 17:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8b2ab15f6dc698028c17efb18c46d160 SHA-1: d4a6fa6d05435c270bc37c6f7953d81e79f1a4e1 SHA-256: a333b61f37cd679bae02e1dfb664c65fe466ea1e2e7ed83a4879e349f7e2d9de
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, 'https://ttraff.com/pify?keyword=atmega+datasheet+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the intent is to trick the user into clicking the malicious link under the guise of accessing a datasheet.

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=atmega+datasheet+pdf In PDF document text
    • http://files.joanobeirne.com/uploads/1/3/0/9/130969889/furenibupa.pdfIn PDF document text
    • http://wobiku.gratefulhomestead.net/uploads/1/3/0/7/130776644/1736142.pdfIn PDF document text
    • http://files.ashleyhainesphotography.com/uploads/1/3/1/8/131871625/d63a4.pdfIn PDF document text
    • http://xananod.mvireland.org/uploads/1/3/0/7/130776760/4846791.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/1/0439/7511/4910/files/fagilekukalurufuvufuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8758/4675/files/73265849822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/academic_english_reading_and_writing_across_the_disciplines_pearson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/mco_1020._34_g.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/joint_venture_accounting_entries.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jedufejaselikaruratemop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6926/8383/files/sotigogopofezusirafug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9198/2491/files/tata_naskah_akreditasi_puskesmas_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3142/8248/files/el_bulli_libro_italiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0481/9613/files/oracle_12c_sql_fundamentals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7265/1413/files/kofalevisomapovasudir.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_off000060ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FF 5316 bytes
SHA-256: f579a847033e687ed9e108eb68b7ee65ea267165c3feabf41fd4689ff23b8db3
font_01_sfnt_off000072fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72FD 9920 bytes
SHA-256: 132bd8c1385abdcd5855b06cbffddeb22fefb7b4554d24ed619f16f49d7afa77

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