Malicious PDF — malware analysis report

Static analysis result for SHA-256 813d4009f6145bca…

MALICIOUS

PDF

42.8 KB Created: 2020-08-17 00:03:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e0e003512218b37c0b76ea63e437a012 SHA-1: 1f83b35fa33f0c6f4da0d998b52bb0927ef93a3b SHA-256: 813d4009f6145bca249b1bb34a953f63114ce456462db855f4fada64e6c5c06e
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting a lure for 'exercises with answers' and includes the malicious redirector URL. This indicates a phishing or scam attempt, likely using the PDF as an attachment in a spearphishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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.com/pify?keyword=bare+infinitive+exercises+with+answers In PDF document text
    • http://files.coffscoastdbc.com.au/uploads/1/3/1/1/131164531/pukesarir.pdfIn PDF document text
    • http://jivumid.bremertondancecenter.com/uploads/1/3/0/8/130874493/1608742.pdfIn PDF document text
    • http://sazodo.coachellavalleyhypnosis.com/uploads/1/3/1/0/131069934/wusasedawig-pipeto-zuleviru-pisiwunisokol.pdfIn PDF document text
    • http://files.whereyouwentphotography.com/uploads/1/3/1/4/131409074/6126332.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/1/0432/2567/7982/files/dejisetelimarugagabori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6991/4782/files/jibibabozaza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6461/4303/files/72287652998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5378/3957/files/besifuwusatuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4261/9035/files/23537655315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1619/1125/files/80058116821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/xamakabokosuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0644/3176/files/warhammer_codex_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1090/6520/files/4500881579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8622/3262/files/51008610667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/fupodidofuzifedisupuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8148/1884/files/zimivovoriduda.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 1

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_off000060fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FD 5204 bytes
SHA-256: 0cb824a236c02f775923e5cb94c7c9a807d47ab839280a688d5346035345be1a
font_01_sfnt_off000072c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C3 13372 bytes
SHA-256: ebfe9811e5cd444c66345565e61330e6e329324473a6a735f876789c1419f852

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