Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe7bfa4786d30cc6…

MALICIOUS

PDF

41.3 KB Created: 2020-08-02 06:12:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 799d66c4d67889cc0230a7f8233d1f45 SHA-1: 58d748448c2340a207bb8352ceb365d84b57cfae SHA-256: fe7bfa4786d30cc6c0a413fc09b961c5db6c32683b5cf36699d08826a0408e0a
242 Risk Score

Malware Insights

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

The PDF contains a prominent link that redirects to a malicious URL, disguised as a lure for a 'free xbox game code'. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms this redirection to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, suggesting a spam or phishing campaign. The presence of a 'download button' lure further supports the phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=free+xbox+game+code In PDF document text
    • http://files.stephaniekeltner.com/uploads/1/3/1/3/131378990/3029704.pdfIn PDF document text
    • http://files.alisonmckenzieacupuncture.com/uploads/1/3/1/4/131408100/gogodunaleniv.pdfIn PDF document text
    • http://files.centralflhomeeducationservices.com/uploads/1/3/0/7/130776167/movakuratuwosuvexav.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/1/0431/3792/5269/files/nassim_taleb_net_worth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3523/8301/files/18815995390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/bewavudupajuruf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9403/9975/files/inverse_matrix_in_r.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/6526718247.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/tademojowaduvifetinovaguf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1092/4437/files/19799825301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9839/7085/files/mojujekatidaragasevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4542/8120/files/90103336023.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/2307192651.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9442/files/23227985489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/povexot.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_off000064c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C6 5212 bytes
SHA-256: b364c3e826d006d4990057c6129f070df7722e340d38ee241ba004336362325a
font_01_sfnt_off00007674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7674 9956 bytes
SHA-256: f01021f989f2aa9a4cd4e2c4af55415566a2b3d995bd3c6db4ea7eaea43f50f7