Malicious PDF — malware analysis report

Static analysis result for SHA-256 8430dd572888a9e8…

MALICIOUS

PDF

48.2 KB Created: 2020-08-07 14:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9505f571a3893e45098f10e34afff16d SHA-1: 3cce2b150495aceedaced9b9e8625bacb1cb78c1 SHA-256: 8430dd572888a9e837c9b40ad7ede2a43b74b7c6b64b25cbea8c754ed2d8d643
194 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.cc) which is flagged as malicious. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'bengali newspaper' PDF, and the embedded URLs include a link to a Shopify domain that hosts other PDFs. This indicates a phishing attempt to redirect users to malicious infrastructure.

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=karmasandhan+bengali+newspaper+this+week+pdf In PDF document text
    • http://files.hbnaz.org/uploads/1/3/1/3/131383283/cf3401ee5.pdfIn PDF document text
    • http://files.diannesk9connection.com/uploads/1/3/2/6/132695749/9dae20aeadd21.pdfIn PDF document text
    • http://files.mechanicalairconcepts.com/uploads/1/3/1/8/131871778/7873092.pdfIn PDF document text
    • http://files.kathrynsantaphotography.com/uploads/1/3/0/7/130775635/kuvezurirafapix.pdfIn PDF document text
    • http://files.rhondastruminger.net/uploads/1/3/1/0/131071076/1562942.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9456/1188/files/cdl_practice_test_nj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1997/6350/files/honda_civic_2020_manual_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8940/2783/files/alan_greenspan_biography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/rabagolumokegekorikatota.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/31766208035.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/87389798482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37237973095.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/spiked_boots_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4445/4056/files/xafapajura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8035/8815/files/43604402176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5298/9607/files/pdf_assembler_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0819/6767/files/basic_english_conversation_lessons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8951/7973/files/negefalabukurumo.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000663e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663E 5400 bytes
SHA-256: 8fa1ed00a048b206df112155a9470522be2cb6dbe0cc1732b8a05dea0b7a99d2
font_01_sfnt_off00007870.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7870 14640 bytes
SHA-256: 875e06b20a0a6595316e3bd3466d8e76d897db389047a8ff2148e4a6c7f5e49c
font_02_sfnt_off0000a57f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA57F 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378