Malicious PDF — malware analysis report

Static analysis result for SHA-256 810bb3de056d2883…

MALICIOUS

PDF

167.4 KB Created: 2020-08-08 13:49:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0fd9d1d3a67d8e199bba4dcecf9ed641 SHA-1: fa5c14b9bc9ad47867602963b059025c80f952f0 SHA-256: 810bb3de056d2883a056342e4dc540b5ec9c8832d87605575249426b43edb677
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and associated heuristics indicate a lure for free downloadable content, which is a common phishing tactic. The ML classifier also strongly flagged this PDF as malicious.

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=alimentacion+saludable+para+ni%25C3%25B1os+geniales+pdf+gratis In PDF document text
    • http://puwax.graingercountytomatofestival.com/uploads/1/3/2/8/132814930/5126511.pdfIn PDF document text
    • http://files.whytherat.com/uploads/1/3/2/7/132712198/xalinepopep_sodafu_salifiwisuk_zijikebexatupix.pdfIn PDF document text
    • http://tevevula.slitefitnessapparel.com/uploads/1/3/1/3/131379965/6650651.pdfIn PDF document text
    • http://files.kl-creation.fr/uploads/1/3/1/1/131164236/5808632.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/1/0433/4141/4552/files/cantoral_catolico_con_acordes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1741/8405/files/zenith_zp506bb_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4028/4583/files/juvoninugorileto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0425/4615/files/gamubixej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2496/6044/files/comment_runir_deux_en_un_seul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4094/8903/files/food_industry_in_the_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/12178623621.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0110/1985/files/69370277149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2646/5436/files/23811894373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/latikujosolurezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1987/7024/files/70252681502.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 4

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_off000246a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x246A1 5696 bytes
SHA-256: 92ebfd5330abadf1c6086280a2bc1e1dd610031b5fa1aa32eb91ed24c3cca15b
font_01_sfnt_off00025993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25993 11396 bytes
SHA-256: e30d1e2756b08f8f63b992094fd52e2822a2903f7644164a3748e3b1fab560b7
font_02_sfnt_off00027e76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27E76 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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