Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b869b26e63c6115…

MALICIOUS

PDF

38.0 KB Created: 2020-08-12 14:11:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 23fabd15d120de264a03dcc129f19305 SHA-1: 2130561c69c72db30e761b1efcdcc6d63c33b976 SHA-256: 7b869b26e63c6115d9c3183e86715f5240684e6f2a0aa186467b82720589d20b
274 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The presence of MFA and password archive lures indicates a strong intent for credential harvesting or to bypass security measures. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to deliver malicious payloads or phish for credentials.

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.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=aadhar+card+application+form+download+pdf+in+telugu In PDF document text
    • http://zumaza.spencerscustomwood.com/uploads/1/3/1/4/131407067/zepurutol.pdfIn PDF document text
    • http://mukudit.gschwindcabinet.com/uploads/1/3/1/3/131378780/5403535.pdfIn PDF document text
    • http://files.dhnature.org/uploads/1/3/0/7/130775284/nuwatokuxep-wajafuvabeta-tisemuvage.pdfIn PDF document text
    • http://files.megan-snyder.com/uploads/1/3/0/7/130775965/jajubobivelunaze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/when_i_am_laid_in_earth_henry_purcell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/carvedilol_prescribing_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6847/9893/files/tiwaragukabikoxaxop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1279/2221/files/aditivos_alimentarios_colorantes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8774/files/67621244790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6949/7753/files/27854688185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6265/7177/files/91802962033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2152/5407/files/armitron_pro_sport_watch_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2224/5273/files/wovododetomar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/88872061673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6854/5442/files/vobusuvutonelefo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8493/8390/files/zogitolopewit.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B27 5356 bytes
SHA-256: f72bc88bf2dcd40f009aa90e380b5a40b49a90637ffc300acd7b9061fdfa58af
font_01_sfnt_off00005d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D36 9208 bytes
SHA-256: 587eaa52918f6fffc0d626d8c357d42356748f07b220266c5be3de3ca394bbd3
font_02_sfnt_off00007cc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC1 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3