Malicious PDF — malware analysis report

Static analysis result for SHA-256 b76b6841a44bb9a9…

MALICIOUS

PDF

36.3 KB Created: 2020-08-22 03:50:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7733f547038f3a575690bc05dd279f59 SHA-1: 08501cfc2640187dbeaf3033a585280e16209ac3 SHA-256: b76b6841a44bb9a92322f073657e2efa34dacc47f405ca2a7ee3edeb3cb7d39e
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains references to a specific URL that is also flagged as a malicious redirector. This suggests the primary goal is to redirect the user to malicious sites, likely for phishing or malware distribution.

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.cc/pify?keyword=codecombat+level+13+hack+and+dash+answer In PDF document text
    • http://files.ict-makers.com/uploads/1/3/1/3/131380120/wobelalidusamoj-nuseg-mogiforulinukup-nesinutijoj.pdfIn PDF document text
    • http://xafiw.cookingsustainably.com/uploads/1/3/2/7/132710601/8869675.pdfIn PDF document text
    • http://files.rangakvernberg.com/uploads/1/3/0/7/130740222/rudujupi.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/1/0438/2638/0960/files/wamuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/unclosed_tag_finder.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5502/2234/files/76069510615.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5970/8058/files/vitodarusizilufofejujika.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0183/9775/files/55631392977.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2541/3782/files/brooding_by_victoria_orenze_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7062/6723/files/los_adventistas_del_septimo_dia_responden_preguntas_sobre_doctrina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0883/5229/files/international_arbitration_act_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1103/9655/files/cyanogen_stock_rom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4248/6944/files/ssc_chsl_admit_card_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5583/2469/files/android_ndk_get_data_directory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4542/9160/files/kevobidikerubazirag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/bojezuberesudofumob.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 4

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_off00004d6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D6A 5656 bytes
SHA-256: 4e4178e8b8c009d5cd18be4ac4015bc14b460be38a32d1b378ff2cb42b75e88d
font_01_sfnt_off00006095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6095 10412 bytes
SHA-256: e9fc5d7848a0ddbc697d4f54ab53640704d7eea462c7f5a7f336f9adff34caf0

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