Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b6db837693a7e2…

MALICIOUS

PDF

53.8 KB Created: 2020-08-21 08:32:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e23c4e86045ea6de29ad32c238870b34 SHA-1: 6529b96bcfb6762cb7ed219588f05117d58007c1 SHA-256: 70b6db837693a7e2c57b24a8fc4004b1bc7d77f663554d913cda612c37a575ff
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. The document body and heuristics indicate a link farm lure, likely intended to phish users or lead them to malicious content. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit user interaction via embedded content.

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.ru/pify?keyword=aopc+dockets+sheets In PDF document text
    • http://files.dunphyshandguntraining.com/uploads/1/3/2/6/132681566/d354c601d.pdfIn PDF document text
    • http://files.cubscoutpack78.org/uploads/1/3/0/8/130874064/mogitesusutopenejudo.pdfIn PDF document text
    • http://rosanudi.briggsquarterhorses.com/uploads/1/3/0/7/130775111/351085.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/1/0432/2436/7266/files/59574437893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0505/0021/files/42570470553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xozujegemuzudileruzodedus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6633/5138/files/english_aptitude_tests.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1038/1208/files/basic_electrical_engineering_objective_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7263/2470/files/74_el_camino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0839/3367/files/mp_board_online_marksheet_check.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2490/6400/files/94226950568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/belajar_bahasa_thailand_dan_tulisannya.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 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_off0000970c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x970C 4876 bytes
SHA-256: 4ca429badbaab62a1a24e071446ab40bf9e28d0e7c2b15a369651318be7b0eb2
font_01_sfnt_off0000a79d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA79D 10312 bytes
SHA-256: 17440cbf6efc57b8644f05bb10739743df50dc682d58625552fad19808fd4adb

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