Malicious PDF — malware analysis report

Static analysis result for SHA-256 8987858613657095…

MALICIOUS

PDF

56.4 KB Created: 2020-08-22 13:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 269c200e61f4a0f1e56583d88aee9595 SHA-1: 4f4f1a56d046978e949adf3ce87b80afe5ff683c SHA-256: 898785861365709586918a32932476eaee41ca9d4760e2c057c72144ced30bdd
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, indicating a link farm or phishing lure. The ML classifier strongly flagged this PDF as malicious. The embedded URL and the document body text, which includes a URL, suggest the primary goal is to redirect the user to malicious content, likely for credential harvesting or further malware delivery.

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=belajar+membaca+tanpa+mengeja+buku+1 In PDF document text
    • http://files.adventuresinfaith.us/uploads/1/3/1/4/131437513/tudowenute_vijerasokesi_jodisopis.pdfIn PDF document text
    • http://files.matthewmixes.com/uploads/1/3/1/4/131437956/sivoru.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/1/0428/2194/3463/files/points_to_pixels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49186839350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8097/2456/files/amma_rajinama_movie_audio_songs_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2687/3509/files/rerexiwujixabopafemesigi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7663/9134/files/chrome_browser_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/wukinenitoderoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1193/8216/files/book_wings_of_fire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9359/0167/files/11100752752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1094/9273/files/revised_schedule_6_balance_sheet_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5352/1823/files/sewaluben.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_off00009f55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F55 5456 bytes
SHA-256: 27e6b5f58a55c26f12eedb864273e7692640387abf9531a3ac401c7a9d8e5a28
font_01_sfnt_off0000b1d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1D9 10120 bytes
SHA-256: 8549594f5a7d7706c7c37ddcb46318bae1ffc828af519880b577b61b56443320

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