Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f3282b82c18d0c…

MALICIOUS

PDF

40.1 KB Created: 2020-08-17 16:07:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f898d958feba2aa010c393c32151cc5 SHA-1: bf3606bf426adb1068d72f0ab96ed34b64bdd346 SHA-256: 84f3282b82c18d0ce6aeb7778292d51eb6e7cbb85d37d8b26a1a6f71f505b96c
202 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body text and heuristics indicate a lure for 'vector infographics templates' presented as a download, which is a common phishing tactic. The ML classifier strongly supports the malicious verdict, and the presence of numerous external links suggests a link farm designed to distribute malware or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=vector+infographics+templates In PDF document text
    • http://files.jenniferowendavies.com/uploads/1/3/1/1/131163736/5981978.pdfIn PDF document text
    • http://wumusugel.spotlightseniorservicestucson.com/uploads/1/3/0/7/130740019/741584.pdfIn PDF document text
    • http://files.sgcommercialmall.com/uploads/1/3/0/7/130738779/fuxabolusamukob-nelebaporevak-sogofivexosavam-wasalurow.pdfIn PDF document text
    • http://files.msharrisfirstgrade.com/uploads/1/3/1/4/131453284/2700394.pdfIn PDF document text
    • http://femojed.ashleynicoleaffair.com/uploads/1/3/1/3/131383664/5898088.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/1/0434/3260/7894/files/rimatavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6960/2978/files/nivogubunefakivulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1991/7720/files/mugenuzikipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3706/4344/files/97775520975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0012/6880/files/18414936352.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1403/7397/files/49910335266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8068/7524/files/nafisifik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1553/6793/files/46036262381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2282/8198/files/child_immunization_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/52618195584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/gexomenipi.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 6

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_off00005f24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F24 5396 bytes
SHA-256: 815fca27c6cc9b64ec58e6efb7da89a5a9477034bf9975051e8c6ed7a8926229
font_01_sfnt_off00007155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7155 10024 bytes
SHA-256: 78e8ac73012423ae3b0926164d4a3274b84f727043a072ec400589c45097199f

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