Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a1e89257171316…

MALICIOUS

PDF

41.3 KB Created: 2020-07-31 14:59:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5e70032d848fbd61e379519251c57e41 SHA-1: e37b54c4748b2a98aba10c6ea159dbfe3c69c35d SHA-256: 89a1e89257171316d6c375501f063d67e4be28c69765123ea6501bc9b67d8fa0
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a redirector at 'ttraff.cc'. The document body, though heavily obfuscated, suggests a lure related to 'algebra questions pdf by abhinay sharma' to entice clicks. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

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=algebra+questions+pdf+by+abhinay+sharma In PDF document text
    • http://files.jeremywolin.com/uploads/1/3/0/7/130776499/136543.pdfIn PDF document text
    • http://files.shirehistory.org/uploads/1/3/1/4/131437041/1e6cbc3e986abf1.pdfIn PDF document text
    • http://files.equivistacoaching.com/uploads/1/3/0/8/130814208/5ff16334be0d498.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/1/0431/8042/5370/files/gilurosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/2194780237.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/77537935673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/99119297308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0360/1308/files/dukudogajoxejowivadakalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11783771814.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1675/7154/files/88781471513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8611/7019/files/64471771166.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65105912314.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/tasegevefapijufuzogose.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sivezijikok.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
🗂 Part of campaign: chattanoogaaudubon.org 3 samples

Related samples 8

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_off000062cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 5696 bytes
SHA-256: 7cb6a270fdcb7c144d72d8f005dad3bd6bf20d2e41df29c1868ad723e69d67a9
font_01_sfnt_off000075f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75F1 10104 bytes
SHA-256: 7950528747814514a71de736840b96c8248b5a3bf7097e68eddd54a010952bae

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