Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b07d05f1eeba330…

MALICIOUS

PDF

53.5 KB Created: 2020-08-05 14:31:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8f52f18b148e25da1c8355ad5ec221c SHA-1: 762dbf771ecb1f730b60a87ed99d332847a9ed1c SHA-256: 3b07d05f1eeba3305f31468d805035b26bc494bf43da35603a755d4707ca6051
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded external links, with one identified as a malicious redirector. The ML classifier also flagged the PDF as malicious. The presence of numerous links, including one pointing to a known malicious redirector, suggests an attempt to lure users to malicious content or manipulate search engine rankings. 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=all+functions+in+python+pdf In PDF document text
    • http://files.norledgemaths.com/uploads/1/3/0/7/130775808/6ea953866640.pdfIn PDF document text
    • http://files.rebeccagoldberg.net/uploads/1/3/0/8/130874598/5e86891d2f.pdfIn PDF document text
    • http://files.thehearthosaka.com/uploads/1/3/1/0/131070452/wixufava.pdfIn PDF document text
    • http://files.personaeentertainmentpictures.com/uploads/1/3/0/8/130813448/3f1d195.pdfIn PDF document text
    • http://files.samaritanhouseofwellsboro.com/uploads/1/3/0/7/130738553/375406dca.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/1/0432/6067/4198/files/benejesex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/61149659229.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/27011464904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/giwisegidilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3734/3387/files/skyrim_taz_visual_overhaul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8382/4294/files/53399729996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1345/3470/files/acuerdos_de_paz_de_paris_1973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3509/8264/files/paputumozijutepimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6427/0743/files/liwudalinoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4550/2626/files/1968_dodge_truck.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zobuwavidojanunixi.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_off000087bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87BC 5028 bytes
SHA-256: f36df3c1a705c8878a5e4b9d3814972017d3f88eae1dc05e42fe9ac2e4cc72e2
font_01_sfnt_off000098ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98ED 15308 bytes
SHA-256: c9e9282ce3900c3d4ffb6e56a64968ff8e3a5b4ba4953d6e21532fb12ed47a62

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