Malicious PDF — malware analysis report

Static analysis result for SHA-256 bba3a89c76c18be1…

MALICIOUS

PDF

50.8 KB Created: 2020-08-08 20:57:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d98cf77edb58a8e1411d659add4af1e8 SHA-1: 551c8d9e3650d4f78762d2efd7c28296cc4b0705 SHA-256: bba3a89c76c18be1e38b2bdffbac3215380d2eae37c5672dcc991e5ce660c943
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=pension+actuarial+mathematics+pdf, suggesting a lure related to pension actuarial mathematics. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to obscure the malicious destination. The ML_NYX_PDF_MALICIOUS classifier strongly supports the malicious nature of this file.

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=pension+actuarial+mathematics+pdf In PDF document text
    • http://files.joanletourneau.com/uploads/1/3/0/8/130813827/varovipulofu_gajixir_jigamakutiseg.pdfIn PDF document text
    • http://nejadali.sandytoessociety.org/uploads/1/3/1/3/131379578/4788057.pdfIn PDF document text
    • http://files.raiseyourvibration.yoga/uploads/1/3/1/3/131382470/7993636.pdfIn PDF document text
    • http://files.psautoworks.com/uploads/1/3/1/4/131407796/1a4b5bb69ec0.pdfIn PDF document text
    • http://files.constabilephotography.com/uploads/1/3/1/4/131437987/vowew-xanifavewolivit-fesij.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/1/0435/6951/2607/files/wupasolajodefevu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9180/2777/files/tixeximolulot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/9048126982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/82448302434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3507/3440/files/wurofux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/xarow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0659/1127/files/86363421076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/13298659001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0106/7166/files/rewodukusafupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7300/2906/files/livros_neoliberalismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/ibm_aix_unix_commands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2218/6653/files/burabulujixexifomed.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_off00007fa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA7 5396 bytes
SHA-256: 34cb1cfc1853d33378e2ded1712394ac9b68dc3b9a6967d7ecbfcbc879687edf
font_01_sfnt_off000091d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D6 13832 bytes
SHA-256: 9a687d8d9222e4a7d3c9e6942d6ceb3e0817ea0be343813b50e35e34cc977703

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