Malicious PDF — malware analysis report

Static analysis result for SHA-256 a505d53a21502a43…

MALICIOUS

PDF

44.9 KB Created: 2020-08-12 20:59:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7982e6f8050782aeb27ee6433b45cf75 SHA-1: d9c5d48d50a4e7cb184dc6bf5eff5fa09da82f97 SHA-256: a505d53a21502a43d51e862a7e416692350a6621bf3a50cb81856369880bf7c7
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/wb?keyword=abbyy%20pdf%20editor%20full'. This indicates the document's primary purpose is to redirect users to potentially harmful content, disguised as a software download. The presence of a PDF link farm further supports a malicious distribution strategy. No scripts were extracted, limiting the analysis of direct execution behavior.

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/wb?keyword=abbyy%20pdf%20editor%20full In PDF document text
    • http://files.anna-abraham.com/uploads/1/3/0/7/130740211/2675710.pdfIn PDF document text
    • http://files.unionpressalters.com/uploads/1/3/0/8/130873902/4efcb9fd3aca.pdfIn PDF document text
    • http://files.whypetaeuthanizes.com/uploads/1/3/0/8/130814769/4941356.pdfIn PDF document text
    • http://files.cashfromtreasures.net/uploads/1/3/1/3/131379054/doxajegom.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/1/0431/3432/0794/files/8544267830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2547/7277/files/adverbs_of_manner_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51220099535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2100/7005/files/fitodufozinamunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9765/3397/files/nezimamonopamexirejopas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6908/6623/files/wow_beast_mastery_hunter_talents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3273/0017/files/matrix_socolor_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2742/2632/files/63919815213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7346/0631/files/lalupezijoxifon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0314/9477/files/47538355670.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_off00005f1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1F 4876 bytes
SHA-256: 96f3594473d3429a8614a999f0882bfd705590ba8ef5f137ba9ee7da3febfd6c
font_01_sfnt_off00006fc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FC3 23576 bytes
SHA-256: a1dbbb00e7c87283e50434f6083d1dde58cdf362b8b8dc4316b6385d537b55a8

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