Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4341f047e1a6734…

MALICIOUS

PDF

38.3 KB Created: 2020-08-06 12:11:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 274a4e5c1d664584d37ad62621556f7d SHA-1: 661135bdad85e4a2d3cf170081e1e238bda16c2c SHA-256: b4341f047e1a6734728c601c6ff2c1778af95f4d2d9d0a053aaadbd3c0bf6ec0
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. This link, 'https://ttraff.cc/pify?keyword=wolff+in+defense+of+anarchism+pdf', is designed to lead users to further malicious content. The presence of numerous other PDF links, as indicated by the PDF_SEO_LINK_FARM heuristic, suggests a link farm or spamming campaign. The ML classifier also strongly flagged this PDF as malicious.

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=wolff+in+defense+of+anarchism+pdf In PDF document text
    • http://files.be-remarkable.com.au/uploads/1/3/1/8/131857117/rulodatap_zakafadezu.pdfIn PDF document text
    • http://files.drgordonself.com/uploads/1/3/0/7/130775921/veluwisipuguja_kezitela_bikixokezed.pdfIn PDF document text
    • http://files.mybluethumb.com/uploads/1/3/1/4/131438449/nirifivapiwafuf.pdfIn PDF document text
    • http://files.justoilit.com/uploads/1/3/2/6/132682471/tefagogelujemub.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/1/0428/0814/8127/files/73868181953.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4395/3567/files/arduino_nano_datasheet_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/organic_chemistry_bruice_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0363/9970/files/pdf_to_word_converter_software_download_for_windows_xp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9229/6358/files/pinofevunekofajeruzomezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/72781973789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/honey_bee_castes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67572949107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/89665223948.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93336639176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9045/2387/files/36719362663.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_off00005816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5816 5408 bytes
SHA-256: b675ef7db30101d5728a04c4bce9607a536f12feb0c349005da21406f0ad740e
font_01_sfnt_off00006a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A64 10028 bytes
SHA-256: 0c344bc7708cebb14e539f0b2c8bd18a9b63be66f6afe2d7d137c558d567c584

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