Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bdb8ca3ae1773d1…

MALICIOUS

PDF

40.9 KB Created: 2020-08-10 05:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1ed42d15f20e25490daf1289491d0868 SHA-1: ed57afd0e00cac21053fafb8a710719c437ee9f7 SHA-256: 0bdb8ca3ae1773d1609f0a6b9066ced2457ea0c1f121edde3ef50d52edea9e96
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com). This suggests the document is designed to lure users into clicking links that lead to malicious websites, likely for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the PDF structure itself points to a link farm tactic.

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/pify?keyword=brain+drain+solutions+pdf In PDF document text
    • http://files.immaculataschool.org/uploads/1/3/0/8/130813988/76ab218c2.pdfIn PDF document text
    • http://files.defy-foundation.org/uploads/1/3/1/4/131438013/feb5acc.pdfIn PDF document text
    • http://files.thisismayfield.com/uploads/1/3/0/7/130776861/xebenov.pdfIn PDF document text
    • http://files.designsiteswithseo.com/uploads/1/3/1/4/131406607/1782384.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/1/0433/0645/1094/files/rukemobewot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8713/2827/files/python_udp_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/sims_4_no_mosaic_mod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/the_animator_s_survival_kit_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6175/4518/files/pool_table_new_rules.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9208/6685/files/eighteenth_brumaire_of_louis_bonaparte.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6014/3014/files/7444287358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/94859095832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7017/6928/files/ditexexasivawivona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3706/3328/files/fenupusomimoxabefizulof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3249/4751/files/delete_all_favorites_on_twitter.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F1 5084 bytes
SHA-256: a909bf2388e6b1135d56d43203b61612021f986e2eebbd185521b17f062c356a
font_01_sfnt_off0000754b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754B 9876 bytes
SHA-256: fc3b6cce800a5afb72c20c5bd17167a161cbfc6d6c4f5047d97c3d006b091420

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