Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e620dcc4ad351d…

MALICIOUS

PDF

38.1 KB Created: 2020-08-20 13:06:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e159cf4b675b377dff7e4eb2ea656a88 SHA-1: 50964edb80deacce8703f0b6c3a7a5be7f1ba19e SHA-256: 67e620dcc4ad351d29ffbc1f006b152b27fa70901cc585ed5f2825e10caafe75
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are SEO-optimized PDF links, and one prominent link points to a known malicious redirector. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary purpose is to redirect users to malicious content or phishing pages, likely disguised as a free download.

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=livro+adriana+figueiredo+pdf In PDF document text
    • http://files.wehwoodart.com/uploads/1/3/1/4/131437969/9961645.pdfIn PDF document text
    • http://mizopagez.beardedbomb.com/uploads/1/3/1/0/131070894/tikavoliz.pdfIn PDF document text
    • http://nirorem.eastmen.eu/uploads/1/3/2/8/132814930/5822863.pdfIn PDF document text
    • http://files.geometricmodel.com/uploads/1/3/0/9/130969433/tofobuxisej_tanaxi_potofoza.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/1/0451/8959/5287/files/50999697996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7400/8741/files/angularjs_admin_template_themeforest.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4807/4396/files/chota_chota_nanayuthu_female_video_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7063/5678/files/ximuvapugevekudov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/rajesukarejetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1850/1799/files/dazolelel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3438/5303/files/gekumu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5583/2469/files/dungeon_master_s_guide_1979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/reragijod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96989945255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4198/7479/files/tebipunutamoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0090/3318/files/15210732203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4184/1571/files/preventive_and_breakdown_maintenance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8298/7173/files/windows_lock_screen_images.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_off000055db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55DB 5000 bytes
SHA-256: b4963fa7c4b0261d6b65dc3296dc2471e9cf6dcf31b413dae783658755cfb1bd
font_01_sfnt_off000066f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F5 10592 bytes
SHA-256: ff483ce5412978b500276396d316858cce148e7af29cd6bb0d2966edc50e6483