Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e5b0646981dcb20…

MALICIOUS

PDF

47.6 KB Created: 2020-08-04 16:05:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce12124995746c14db6c56f27b51d208 SHA-1: 57bfb7144b93d34e692db445335f59d398610392 SHA-256: 3e5b0646981dcb20f46b304ff6d001f26b7a4917aad512db2d6463091e7d057b
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 that is known to host malicious content. The document body and heuristics indicate a lure related to 'cryptocurrency investing for dummies pdf download', suggesting a phishing or scam attempt to trick users into downloading further malicious content. No scripts were extracted, but the presence of numerous links to potentially malicious infrastructure is a strong indicator of malicious intent.

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=cryptocurrency+investing+for+dummies+pdf+download In PDF document text
    • http://jotokifi.mainerobotics.org/uploads/1/3/1/4/131453494/8936633.pdfIn PDF document text
    • http://files.armandwright.com/uploads/1/3/1/4/131437601/f6e9372eb.pdfIn PDF document text
    • http://files.i-tee.org/uploads/1/3/1/6/131637529/xunerunirerenuxopug.pdfIn PDF document text
    • http://files.tatrafarm.com/uploads/1/3/2/7/132712530/nolijatetij-wigaxabidusof-ranoretuwovi-gimofidefuzuvaj.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/1/0434/8978/8069/files/dajarupixeladomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7620/5209/files/dekevesozalodivoxokonuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8575/8628/files/24119743121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34515707504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9345/8070/files/21258956037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3903/8360/files/negima_episode_5_english_dub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/91375673653.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7667/2918/files/34208629732.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7922/1919/files/memuxitutakupujerudax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/rekogebemuronafejeluso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/wosiduxojemesagedunifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/finajojetubibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6028/2023/files/19321717545.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C00 5636 bytes
SHA-256: 0812d9d2553b922ae314618b49a968c1d11de99f58731d74421012fb8a6caafa
font_01_sfnt_off00006f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2E 10092 bytes
SHA-256: 909930fa45b31973e4e7b49d6284e499d5133b344be651a0c4ca703527874f80
font_02_sfnt_off000091e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91E6 19252 bytes
SHA-256: 926021a643e4ec05d8cf5bfaaa379ae9081f7c29da074ea5081ae034101351db