Malicious PDF — malware analysis report

Static analysis result for SHA-256 da82473d35e0094e…

MALICIOUS

PDF

60.1 KB Created: 2020-08-04 19:23:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 590140677eafb154d382915f873c3cdf SHA-1: 6d45f0153d0dc77080ca07a658c364e0cd8584b2 SHA-256: da82473d35e0094e78373d473db4f3a58a8706eae3d9cdebf700c07508e25fd8
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wb?keyword=kailash%20satyarthi%20biography%20pdf%20download', is designed to trick users into downloading further malicious content. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, many of which are hosted on Shopify. The primary malicious URL is the most critical IOC.

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/wb?keyword=kailash%20satyarthi%20biography%20pdf%20download In PDF document text
    • http://files.senecaswissys.com/uploads/1/3/0/7/130738806/04abb.pdfIn PDF document text
    • http://files.innovative-teacher-motivated-student-project.com/uploads/1/3/1/0/131070751/giduxaxezipa.pdfIn PDF document text
    • http://wemop.norwoodcavies.com/uploads/1/3/0/7/130739674/ffb7e244870a7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7676/4327/files/zawolovukatulawe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8578/3447/files/saxovaxavebofonosize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/nidujevabibiba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/latijafodekowetuvituzuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0809/0535/files/52931229187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/67270934567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mejamuzeditika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4933/6483/files/mopozobejitenovuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/70497557489.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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009bd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BD1 5608 bytes
SHA-256: 1b5e0887612fb5b8b51aaff6252e0be76fc53ec8b41fc19ab13d5781b39c4df3
font_01_sfnt_off0000aef4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEF4 10496 bytes
SHA-256: cd214f314ffb5ce57e4631829b1caf1664e181c19d24353801fe05ab2dc39913
font_02_sfnt_off0000d31a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD31A 4332 bytes
SHA-256: 7623ed09a5c6dcb724354272eec70a02ca536482c7b4de59f1b96c448d35fe87

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