Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf3a92c5c65f9a32…

MALICIOUS

PDF

40.5 KB Created: 2020-08-17 14:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a70af167386ddb3e10d84eb23732c1b5 SHA-1: e32066d741660ced663cdeb00b06054a0d247d16 SHA-256: cf3a92c5c65f9a3230be789a34e9a892cbc667f08570babb45fc506592a4c97e
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a free PowerPoint template. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and the embedded URL confirm this. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on Shopify, suggesting an attempt to distribute malicious content widely. 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=save+earth+powerpoint+template+free In PDF document text
    • http://files.luskccmaths.com/uploads/1/3/1/4/131454581/2deff6e4e6a1.pdfIn PDF document text
    • http://files.mikewritesabit.org.uk/uploads/1/3/0/7/130775557/2989903.pdfIn PDF document text
    • http://pokop.revenuerampup.com/uploads/1/3/2/6/132682107/1042222.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/1/0429/5491/6006/files/55784176484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3537/7307/files/2572132101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1962/2808/files/biwesakovapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/wizubulimoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89352644259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5942/6968/files/suprise_arizona_zip_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3624/5142/files/friendship_story.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7824/4765/files/64376690766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8457/0012/files/jeevan_shanti_policy_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4392/9762/files/75251041794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fufabolip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8615/9767/files/14256301103.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 5

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_off000060c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C8 5216 bytes
SHA-256: facce50c0f056b9d5c9237997ce90ef4fa032008c03dc4aac65b0a95a24af173
font_01_sfnt_off00007270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7270 10156 bytes
SHA-256: 171b98c1b3d002feb00b2a6a6a456013e9f9958e8fc198038d01c8b46fb6a14b

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