Malicious PDF — malware analysis report

Static analysis result for SHA-256 884f586e31d5e406…

MALICIOUS

PDF

39.7 KB Created: 2020-08-08 21:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ef90b03e41c86c08a27c1f3f65426a4e SHA-1: 5d6a0451f2d268b03f2a488bd13b471c222b36a8 SHA-256: 884f586e31d5e406af6e6776cdec4f5fbf6cf2f92adc047348d3f0b5405dcd2e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with one prominently identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a 'business partnership deed format pdf', which is a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of a redirector URL points towards an attempt to lead the user to a malicious site.

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/wb?keyword=business%20partnership%20deed%20format%20pdf In PDF document text
    • http://files.freckledsteps.com/uploads/1/3/0/9/130969151/64e9e93d8858.pdfIn PDF document text
    • http://ralikakoj.eurekaloggerfootball.com/uploads/1/3/1/4/131438641/5fbac18470f3c.pdfIn PDF document text
    • http://zoxixak.weddingdjcotswolds.com/uploads/1/3/0/8/130813612/53bd65d003.pdfIn PDF document text
    • http://files.donniebickham.net/uploads/1/3/1/4/131437660/8204118.pdfIn PDF document text
    • http://zoxawu.sbdumpsterrental.com/uploads/1/3/1/3/131383791/gizuti.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/1/0431/8865/0141/files/xewodirobite.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0349/5071/files/tiforosun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1996/8417/files/vitadagunulikajubane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2729/9478/files/benedetto_croce_que_es_el_arte.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/43891667319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7527/2855/files/lujevofuwezerovizog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/9272504915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8225/2442/files/kenenumeronogatexife.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF4 5300 bytes
SHA-256: 96659825b8b5b9cbbe9bfdab6ff360ae2e92e070aa608f9d217cef22ae05b624
font_01_sfnt_off00006ed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED1 10272 bytes
SHA-256: 4fdbbd41aa9e84c785649ca3557150a35b724d39b7316b68a48d1ac2815c541a

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