Malicious PDF — malware analysis report

Static analysis result for SHA-256 894ddd6dbf9d194d…

MALICIOUS

PDF

34.3 KB Created: 2020-08-28 15:02:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 89bf7b9d8a4d1913cf8b7cda8cc38577 SHA-1: b3a16bebe8926c2e20e11f815c6dcb9a94bceab9 SHA-256: 894ddd6dbf9d194dc1ce71d53e67fb4348506a6244900090c4f31558a1bd379f
194 Risk Score

Malware Insights

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

This PDF document contains multiple links to external resources, including a redirector URL that is flagged as malicious. The document body, though heavily obfuscated, contains a reference to the malicious redirector URL, suggesting an attempt to lure users to a potentially harmful site under the guise of providing academic materials. The presence of numerous PDF links further indicates a link farm or redirection strategy.

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=dimensional+analysis+for+meds+4th+ed In PDF document text
    • http://files.countyparkfriends.org/uploads/1/3/0/8/130814279/zobisulit_selitiga_sojinotavom.pdfIn PDF document text
    • http://menimevit.mvnatmed.com/uploads/1/3/1/6/131606289/romujosi-nisad-rizaxa-woporesi.pdfIn PDF document text
    • http://files.alloutafrica.org/uploads/1/3/0/8/130815058/jotawotewilobon_gugin.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/1/0440/3717/7494/files/joint_probability_mass_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5559/5172/files/44710693311.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5404/7137/files/libomulexavexigaxudetej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76410179135.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2484/9815/files/chatterbox_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/fesugedubamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/default_android_sdk_location_android_studio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2505/5389/files/majarawuderunewegemudi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wadilizesiwegokadokepub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2178/4472/files/apa_publication_manual_6th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9739/2031/files/rojotusaligo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4122/4861/files/47468347598.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_off0000491e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x491E 5336 bytes
SHA-256: 53883b9f7da9439cac4f2fb7217c30146bee4b6b62c5a8ea01101fcd2acbd469
font_01_sfnt_off00005b1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1B 9748 bytes
SHA-256: d5444599ced5bda60d29c2702b22237d613c20768d7d241c5438a198b2c44de2

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