Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccf4f9450268d7a2…

MALICIOUS

PDF

44.9 KB Created: 2020-08-09 02:16:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3a9c1d8d6db9331190d03985ba69d620 SHA-1: d98072333a66914cbe72ad8e4688f548cbaf1184 SHA-256: ccf4f9450268d7a2f19e5be1a7d47f29f67fc358496015609dbf5f557140b868
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains the string 'tabacaria fernando pessoa pdf' and the malicious URL, suggesting a lure to a potentially harmful site. The presence of a link farm further supports the malicious intent of redirecting users.

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.cc/pify?keyword=tabacaria+fernando+pessoa+pdf In PDF document text
    • http://files.teachingpeaches.com/uploads/1/3/1/4/131438379/18a2d40d5824.pdfIn PDF document text
    • http://wifoki.chcslonline.org/uploads/1/3/2/8/132815028/nalegi_gavovov_jipipeladokuw_rojuba.pdfIn PDF document text
    • http://files.jitsbottles.com/uploads/1/3/0/7/130739401/7767804.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/1/0431/8999/3636/files/gesutesafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7587/1654/files/53339763770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0742/7238/files/10911025312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/rufixofinuwugejawuleluja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61086590007.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6973/files/40601009965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3028/1381/files/xovagiruz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8918/3398/files/xitimabujirisiladipige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6331/1512/files/64341369967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasebiv.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007321.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7321 5208 bytes
SHA-256: ea6c59939f0a79d5763596afcc33d11e2de2a87496145232dcfcd030fcaef5a6
font_01_sfnt_off000084dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84DC 10140 bytes
SHA-256: 69b82d672a36314f0bff57cc5dfe5095f28de17ecee50ad746f64fd167d42d7b

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