Malicious PDF — malware analysis report

Static analysis result for SHA-256 b64253003d9d58e2…

MALICIOUS

PDF

61.9 KB Created: 2020-08-14 05:46:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7edbbfa619ec0f859809ab0c690c83ac SHA-1: 8f1556dbf41bee1f8de73af37ec0e82894196397 SHA-256: b64253003d9d58e25860a14755be854be6515fb3181399cb0cc48b305c2b0703
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=ielts+writing+task+band+9+pdf`. This URL is likely part of a phishing or scam campaign, using the guise of IELTS preparation material to entice clicks. The document also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is the highest priority 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/pify?keyword=ielts+writing+task+band+9+pdf In PDF document text
    • http://files.lennoxwarner.com/uploads/1/3/1/3/131378975/ad9ad45c57236b.pdfIn PDF document text
    • http://files.catalystipf.com/uploads/1/3/1/6/131637125/534992.pdfIn PDF document text
    • http://files.windmillpreschoolbrill.com/uploads/1/3/1/3/131381919/3182821.pdfIn PDF document text
    • http://ronupuzo.wellbridgehealthessentials.com/uploads/1/3/0/9/130969352/fanisep_sofike_fuzuvelenid.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/1/0434/7166/7352/files/22466437779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3899/7665/files/xojogepofixalubifep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32852202686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/notarized_letter_templates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vevisip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9345/0134/files/33945871919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/zixop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9689/7704/files/dafojobojezivulexuwifiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6982/4414/files/tamewaruvelovuker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70998441087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7458/3709/files/bid_bond_template.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b458.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB458 5600 bytes
SHA-256: 619703e8b7cea9eecc538d4fba68046e60665b42b9d0936a4a0a57e1dbde7eaf
font_01_sfnt_off0000c77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC77C 10360 bytes
SHA-256: 005d2ba52210d3f67f0c7049ba1eee337602f82e10d77fe5a597d95355e15519

Open this report in the interactive analyzer, or submit your own file for analysis.