Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f7baf089799e0b…

MALICIOUS

PDF

78.7 KB Created: 2020-08-22 22:46:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05b303a6f6136757853b982172167332 SHA-1: 5065398b36b67dd3fff05be758597db93d3bd763 SHA-256: f2f7baf089799e0bc385d2535aa71f7b6500b1cf71c601e5cd99efbe7af6331b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to external PDF files, suggesting a link farm or SEO poisoning attempt. One of the primary links, https://ttraff.cc/pify?keyword=echocardiography+report+example, is identified as a malicious redirector. The document body, though heavily obfuscated, contains the text 'Echocardiography report example', reinforcing the lure. The ML classifier also strongly indicated maliciousness.

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=echocardiography+report+example In PDF document text
    • http://dogune.bostonhelicopters.com/uploads/1/3/1/4/131406344/1181b9.pdfIn PDF document text
    • http://tetiju.otterspacearts.com/uploads/1/3/1/0/131070374/7e6545f221.pdfIn PDF document text
    • http://files.medinfokit.com/uploads/1/3/0/7/130776757/4109878.pdfIn PDF document text
    • http://files.braverthanthewaves.com/uploads/1/3/1/4/131453807/5359755.pdfIn PDF document text
    • http://pijowa.sprinng.org/uploads/1/3/1/4/131407267/mobobu-kaxukax-xomebenigozup.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/1/0439/2629/0587/files/18179963868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7910/6724/files/bafovodipokog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9428/5218/files/zosusaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/7453/8920/files/drush_add_admin_user.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5797/0329/files/haloalkanes_and_haloarenes_ncert_exercise_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4678/0579/files/tenor_saxophone_arpeggios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3745/6534/files/sebi_guidelines_for_mutual_funds_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3246/8904/files/38204948236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/46198971321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1961/4882/files/xejawoxinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0741/7253/files/kizimevamelakaseginosax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/77079120404.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_off0000edeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEB 5436 bytes
SHA-256: 9e4aa6fa2c7ebc47d739abddb3bad172e7b32efdcd920757ab76bc5d7914da2a
font_01_sfnt_off0001004f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1004F 14644 bytes
SHA-256: 35b2c3167b720db29cb3ca0649273c5bf919124a7c1655ee3666ebe5d38339dc

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