Malicious PDF — malware analysis report

Static analysis result for SHA-256 38facfb1bc58fe48…

MALICIOUS

PDF

54.7 KB Created: 2020-07-15 18:11:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 633c777b896dd315437af86d8b688f90 SHA-1: 7282c974571c017186a7a0d2c54929c4467bce86 SHA-256: 38facfb1bc58fe4890dd9936daf0713b2ad67af57acacd38389916605956a3aa
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of these links, 'https://ttraff.com/wb?keyword=greta%20garbo%20deogracias%20rosario%20pdf', points to known malicious redirector infrastructure. The primary purpose appears to be SEO manipulation or redirecting users to malicious content through a large number of external links.

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.com/wb?keyword=greta%20garbo%20deogracias%20rosario%20pdf In PDF document text
    • http://files.thomasradovich.com/uploads/1/3/0/7/130775942/57f120.pdfIn PDF document text
    • http://files.cafedatalkalamode.com/uploads/1/3/1/4/131483550/3bbbf7.pdfIn PDF document text
    • http://files.alifeworthliving2.org/uploads/1/3/0/8/130874318/lenalaw-fowez-legojumafixixin-tunotababivofen.pdfIn PDF document text
    • http://files.jaysuneatstaipei.com/uploads/1/3/1/3/131383982/fizogin_vozawanelo.pdfIn PDF document text
    • http://files.huntsbrangus.com/uploads/1/3/0/8/130813111/667c4f55437.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://petegibeka.files.wordpress.com/2020/07/81542303190.pdfIn PDF document text
    • https://gavewune901380018.files.wordpress.com/2020/06/vesaminemu.pdfIn PDF document text
    • https://tizamugoli.files.wordpress.com/2020/07/11625226123.pdfIn PDF document text
    • https://mijukuwojaw.files.wordpress.com/2020/06/ladoludokekuwugebem.pdfIn PDF document text
    • https://varimos.files.wordpress.com/2020/06/negusudonusote.pdfIn PDF document text
    • https://jerobure.files.wordpress.com/2020/07/kanosiduwapititimudova.pdfIn PDF document text
    • https://nutumomox.files.wordpress.com/2020/06/pitolorusidagadewap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55497749658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2576/7320/files/59092179664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mikawewetekiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4855/1068/files/xebosupenewos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/depiralufodulatir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4479/8613/files/80912466775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6275/5490/files/5239384297.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/lekupo.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_off0000987a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x987A 5144 bytes
SHA-256: b186cfd50185b74c3237ac11b148474ce7d8661da16329648febd92de32f5b1e
font_01_sfnt_off0000aa11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA11 10272 bytes
SHA-256: d8d525a1abd0384682cfe11b2db795002ba680f25231dcb343fab43b4dd3685d