Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee5f415eae31cb6…

MALICIOUS

PDF

48.0 KB Created: 2020-08-01 07:19:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a4c8f9103e521dd286bf887da6f40989 SHA-1: 281a39da5911627ac3371c1614413354d289c10b SHA-256: bee5f415eae31cb6869feacb249e94e32f1b578dcca5dd320e77eca2f0cca354
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body is heavily obfuscated but contains references to URLs, suggesting a lure to external content. The primary attack pattern involves leveraging these links to redirect users to malicious infrastructure. No scripts were extracted from this sample.

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=urllib2+vs+urllib3 In PDF document text
    • http://files.thederekday.com/uploads/1/3/1/4/131408068/6810444.pdfIn PDF document text
    • http://files.leadingyouhome.org/uploads/1/3/0/9/130970001/fulebusujew-lanot-kebavuvomufofi-fusibov.pdfIn PDF document text
    • http://files.railoun.com/uploads/1/3/1/4/131408100/70dccdd04f8.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/1/0431/9461/3924/files/7113060315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/suratonuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3686/8762/files/41377685156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/36166945318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1450/4093/files/40699961060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/84141660513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1096/5147/files/69876846789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/hamilton_beach_ice_cream_maker_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8176/8872/files/99720307448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/55037354815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/fujubomagotatavulaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3480/2333/files/nupenuberek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xumilegimazuguvabunozanik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55497749658.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA9 4956 bytes
SHA-256: f4f851a037730ae67e89369e6d65c2a95d7fd1cbf464dcc13f76c8e626a9206b
font_01_sfnt_off00007d97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D97 1800 bytes
SHA-256: daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e
font_02_sfnt_off00008625.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8625 14008 bytes
SHA-256: 4733ef886fadac8e7f52adf17c69245570e4e5298e4f86b5db22ce0e7dd733ea

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