Malicious PDF — malware analysis report

Static analysis result for SHA-256 be4eda618ef36cc9…

MALICIOUS

PDF

55.3 KB Created: 2020-08-06 17:28:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1b1b8ea5142a709fb1e61ec2b6d28f00 SHA-1: 77f688f380f8d182993b50ff9856a4934d04b514 SHA-256: be4eda618ef36cc906465a402a20a97e67167a7ab3fa35c426b7be062bb1991e
234 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector infrastructure. The document body, though obfuscated, contains a URL that leads to a known malicious redirector. This suggests a phishing or scam attempt, likely to deliver a second-stage payload or lead the user to a malicious website. The presence of a password-protected archive lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.ru/pify?keyword=journal+el+khabar+pdf+2020 In PDF document text
    • http://files.truth-is-beauty.com/uploads/1/3/2/7/132711954/f42b68394.pdfIn PDF document text
    • http://files.taxperks.net/uploads/1/3/0/9/130969059/efd4d57902c66.pdfIn PDF document text
    • http://files.rhythmresearchresources.net/uploads/1/3/1/6/131606127/gelizoxi-mevep-xuzumifam.pdfIn PDF document text
    • http://files.bookcellarlwonline.com/uploads/1/3/1/8/131860787/xejapami.pdfIn PDF document text
    • http://files.patersonprek.org/uploads/1/3/0/7/130776326/xaxixuluf.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/1/0432/2977/3982/files/unbreaking_enchantment_id.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9899/6889/files/nonamizemugagovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/zoology_books_for_bsc_part_1_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1297/2963/files/sajikebomuxitosejewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1903/5033/files/wilimumasogiranusolosol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0992/3480/files/gutimegazexumin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2370/3969/files/8610280706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9141/8518/files/98672736122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8081/8581/files/47033411362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/48558690548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5454/6590/files/tujojimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7826/2692/files/xetiduxuniwejop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3672/9766/files/85825350510.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009f76.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9F76 27012 bytes
SHA-256: 6816dcc797eaefe632be703626225bd7cd64350bc4c723d96550e74e72941be2
font_00_sfnt_off00006095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6095 5416 bytes
SHA-256: ccb7055195a4562cdcddcbd74037c4b3208f456222d6a5329806c641f01cca1f
font_01_sfnt_off000072f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F5 14288 bytes
SHA-256: 072cf68e5813aaecdef01aacf62b907e97b5638d78d3577171754e44e5903277