Malicious PDF — malware analysis report

Static analysis result for SHA-256 be5fe4f79eae8f7f…

MALICIOUS

PDF

61.0 KB Created: 2020-08-07 15:53:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0d0b4f38aa464d366891b5698bfe811 SHA-1: aa72fa9fe11d7268ce4031d823b5118ed7d80d78 SHA-256: be5fe4f79eae8f7f79d7026ebe4bb06cd328ea099ed867fd674298009989a757
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector infrastructure, suggesting a link farm or phishing lure. The ML classifier and critical heuristics confirm malicious intent, likely to redirect users to malicious content or phishing sites. The embedded URLs and the PDF structure indicate a social engineering attempt to trick users into downloading or accessing potentially harmful content.

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=libro+quien+es+san+miguel+arcangel+pdf In PDF document text
    • http://files.alphanustate.org/uploads/1/3/1/3/131383581/wezopuzake.pdfIn PDF document text
    • http://files.filigreetheatre.com/uploads/1/3/0/7/130776407/lugupidovime_jitawom.pdfIn PDF document text
    • http://files.oibaws.org/uploads/1/3/0/9/130969446/gufiluje.pdfIn PDF document text
    • http://zojokiz.knutsonconsulting.com/uploads/1/3/1/4/131406717/4e75ee8a274f01.pdfIn PDF document text
    • http://files.spiritofthefiddle.ca/uploads/1/3/1/4/131438113/b0dc5f72408bc2.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/1/0434/8480/7334/files/75106670097.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7610/5893/files/bissell_little_green_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7093/9541/files/zekag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6145/8582/files/bidafogez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6480/0918/files/7387653199.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zevuwuvufotolotatagonisex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4804/1637/files/bevasojinolun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/82808049389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2688/9374/files/ledukepek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4178/1920/files/96528440389.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9906/2426/files/ximeloletosaxobafolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3343/6066/files/81792015347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8669/3023/files/xusetuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8969/files/lalapamavazipizipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7961/files/assessment_for_learning_textbook.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA867 5684 bytes
SHA-256: 79c820f1f01f4e7e04aef9c996d8e945efc0db089f306465842f12021fa7c5f9
font_01_sfnt_off0000bb9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB9A 12780 bytes
SHA-256: 14002ee230417a10751041f369d0973ac957c88365af999fbaf03eee42ef396c