Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a3a0083dd8fca3f…

MALICIOUS

PDF

52.7 KB Created: 2020-08-18 16:57:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 01205bab0c75ddbfaaa14ce895d65f6e SHA-1: 649ba673c3b4743de07b92610ea45c94a52caf7c SHA-256: 9a3a0083dd8fca3f8d0b0a42c38fa3c1346479fd9d3a6d700c9f65782c959a63
242 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or scam attempt. The presence of a 'download button' lure reinforces this. The primary malicious IOC is the redirector URL which likely leads to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.cc/pify?keyword=ameloblastoma+a+rare+case+report In PDF document text
    • http://files.kelownavacationseasonalrentals.com/uploads/1/3/0/7/130738912/koxofigoraxatoviteb.pdfIn PDF document text
    • http://files.root2riseyogaandfitness.com/uploads/1/3/0/7/130776088/7716605.pdfIn PDF document text
    • http://files.thesociablehome.com/uploads/1/3/1/4/131437601/4a673cfb1c406f.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/1/0431/4087/4408/files/50594625964.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9282/8579/files/zara_bedding_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5481/6665/files/zirovamimuxipugavurotir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3772/0733/files/8208550153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7181/3285/files/jedeginamimototudujizari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2638/9912/files/67077081524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7191/7471/files/asean_regional_forum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/bibezadezot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9126/4413/files/ashe_guide_9._15.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1481/4882/files/24283438664.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_off00008bad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BAD 5208 bytes
SHA-256: 750b0fcc80caa7d09cf47101cc29d36510494cb4107ec373494aa870d36c2e25
font_01_sfnt_off00009d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D3F 12432 bytes
SHA-256: 959bf32e35592bbdba3fd2115098fc9a40e3e54b3c07c3123f26b3169917b756

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