Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b9ad2485c7e97c7…

MALICIOUS

PDF

51.9 KB Created: 2020-08-22 03:32:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 59c71cede30dc9a6a8f1e73a4d4758a7 SHA-1: 1b17bcb5ce29dcdedbed31f8c958c74b9380fe6c SHA-256: 4b9ad2485c7e97c7d97b8562e1ec8b7b67b62c413316e20df9aa7c222f91a62f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains a large number of embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text related to 'Starbucks almond milk latte nutrition information' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a link farm indicates an attempt to manipulate search engine results or distribute malicious content broadly. No scripts were extracted, limiting the analysis of further execution steps.

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=starbucks+almond+milk+latte+nutrition+information In PDF document text
    • http://files.annmartin.co.uk/uploads/1/3/1/4/131437513/wunowor.pdfIn PDF document text
    • http://files.moftydentalclinic.com/uploads/1/3/1/0/131070925/piverisikukopo.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/1/0454/0334/0968/files/michigan_alcohol_screening_test_spanish_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7663/3247/files/6165459951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6241/1935/files/26623815043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8470/7992/files/16593611765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/wimube.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/7946/2040/files/free_editable_calendar_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3077/files/80058350496.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5469/3541/files/posepititofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2249/0528/files/marketing_communication_manager_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4140/7644/files/20294342833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6170/5890/files/95355972413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91146339154.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 2

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_off00008d37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D37 5476 bytes
SHA-256: d612b258a51b6b0b81cdb26aac4ea65166eae63ecee8e45ce6311b3c57ca0685
font_01_sfnt_off00009fb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB1 10268 bytes
SHA-256: 791b6746d7801c689bcebc672f7c80c79158fab93e56c1c7f91e191aa2a79ae7

Open this report in the interactive analyzer, or submit your own file for analysis.