Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd408037c1acb10b…

MALICIOUS

PDF

53.4 KB Created: 2020-08-08 14:06:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3c98ba618cae4f9cbef5d1e8a29e8bdd SHA-1: b4269318fe0b0eecf84152f2ab9ece0c8aea5338 SHA-256: cd408037c1acb10b39734baa69e67e1b7fbdfa26bee216c6f177b3709c39fadd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=albumin+transfusion+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, including one to 'https://cdn.shopify.com/s/files/1/0428/9206/6975/files/minecraft_1._14._2_mods.pdf'. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent.

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=albumin+transfusion+pdf In PDF document text
    • http://files.arunabhasengupta.com/uploads/1/3/2/6/132682716/1359087.pdfIn PDF document text
    • http://files.marybethrobbins.space/uploads/1/3/1/6/131637606/nubedazitanenig.pdfIn PDF document text
    • http://files.dogeventinfo.com/uploads/1/3/0/7/130739864/xafogi.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/1/0428/9206/6975/files/minecraft_1._14._2_mods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1871/files/97216648998.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3066/6651/files/telugu_calendar_2020_with_festivals_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9222/0840/files/fuwiloku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/11277817751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0658/1147/files/52900510633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9026/4742/files/65066177513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/59197674916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5308/0991/files/8050196168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/64010165024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8044/1238/files/agenda_21_italiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/11982648742.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 2

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_off00009256.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9256 5316 bytes
SHA-256: 0f142222e30e39add5ef22e95cc3421b3f6a4c0201076e810e336f685016ce36
font_01_sfnt_off0000a44a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA44A 10700 bytes
SHA-256: d85e5dda96a408b1681da40d03f2bfe725f846f66ccae1ff9a1f32a9fc8bbf6b

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