Malicious PDF — malware analysis report

Static analysis result for SHA-256 86e2178730619e26…

MALICIOUS

PDF

43.5 KB Created: 2020-08-09 03:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa369ee6f6b24d9ea68814305f6e41c7 SHA-1: 77b0b51b97e78d7ec52bd8816b0339a36d91e175 SHA-256: 86e2178730619e266cf4d816519a008fd66ff71c934835f02f50c282f6e75459
202 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=real+ielts+listening+test+pdf'. This redirector is likely used to host or deliver a malicious payload, disguised as IELTS listening test materials. The ML classifier also strongly flagged this PDF as malicious.

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=real+ielts+listening+test+pdf In PDF document text
    • http://files.adenta.com/uploads/1/3/1/3/131380343/bulasafukojozoxa.pdfIn PDF document text
    • http://files.imagecode.org/uploads/1/3/1/4/131453133/14f35acb0.pdfIn PDF document text
    • http://files.queenstreetartschool.co.uk/uploads/1/3/2/3/132303329/kekugibeboni_xikugi_sezevivibamilu_getilon.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/1/0433/4007/1070/files/5266064958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/67639030304.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8723/2166/files/pimobutinexomabakeloli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0392/5912/files/cadillac_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0867/2423/files/96468566137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/niboj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/fatuwojutaledodure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/gewerom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/niwefexunadujavopugujufa.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off0000586c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x586C 5120 bytes
SHA-256: 022378f307b623d581b0cfa36afd055c8c3580a0a068017949b13483c4940c90
font_01_sfnt_off000069f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69F8 9932 bytes
SHA-256: e6e1f22fbc1b63c93dd2f374ab0078eb26e7909984e86f0cf3edb643b7689e6e
font_02_sfnt_off00008c29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C29 16120 bytes
SHA-256: b8fa99db91b4e2a38fb01ca4f8dfd1970d271bfdaf7323161a8b02e369b8fc98

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