Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bec3c4c700bf87d…

MALICIOUS

PDF

53.7 KB Created: 2020-07-25 01:10:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa0c7ac08151a1e9673788899dfacea3 SHA-1: a31e708342a37638ee261927ec6ed9f350aade6d SHA-256: 6bec3c4c700bf87da8e109f2c96e81fafa7b434c0b8598b1dbc34fbce931e914
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, pointing to a redirector URL. The ML classifier strongly flagged this PDF as malicious. The embedded links and the document's structure suggest an attempt to lure users to a malicious site, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=alif+laila+bangla+pdf+free In PDF document text
    • http://files.mouseandmeco.com.au/uploads/1/3/0/9/130969146/bb6eb39.pdfIn PDF document text
    • http://files.rachelcrawford.org/uploads/1/3/1/3/131384606/bf9287b.pdfIn PDF document text
    • http://files.knotsofbows.com/uploads/1/3/1/4/131454286/6101680.pdfIn PDF document text
    • http://files.davero.ca/uploads/1/3/1/3/131381374/abc53c1.pdfIn PDF document text
    • http://files.larryssportsexchange.com/uploads/1/3/0/8/130874128/folerezome.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/1/0430/9060/8285/files/64123690742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/93223294338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/97734531958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7717/9294/files/84438791140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0682/8441/files/91909315646.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/baganivewom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4277/3914/files/37572763057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96951977507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6150/0309/files/xawabegugizakekape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75555741983.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C77 4760 bytes
SHA-256: 4850c2a106eff6a706cb44569e1f972a0e3caaab4cd98b0508bdf3b3ebfb124e
font_01_sfnt_off00007c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C98 10688 bytes
SHA-256: 5c91c2100c77e66391dce17715d744bc526dd16c6111dadbe915532cfe19eb95
font_02_sfnt_off00009cf2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF2 14044 bytes
SHA-256: 708ca79262539a974e82f28df261b1441a2ab093243e9e7583a9aa38d3d604a8