Malicious PDF — malware analysis report

Static analysis result for SHA-256 01949af8d9614883…

MALICIOUS

PDF

71.0 KB Created: 2020-08-12 01:39:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7ac6ccff93ba41740becf18f22017b61 SHA-1: 84702e973920a9eff078b42587d8e5952cd4d14c SHA-256: 01949af8d9614883a677fa64164952aaa005ab8004e8882771770e18f7a01ba2
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one prominently identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL that triggers the redirector, suggesting an attempt to lure the user to malicious infrastructure. The ML classifier also strongly indicated maliciousness.

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.ru/wb?keyword=gymnopedie%20no.%201%20sheet%20music%20pdf In PDF document text
    • http://files.jimmyzhan.ca/uploads/1/3/1/1/131163705/24512da11f.pdfIn PDF document text
    • http://files.slesanz.com/uploads/1/3/2/6/132681901/zavesusu_takedof_jepafipe_duwibomipekewa.pdfIn PDF document text
    • http://files.furbabiesandfriendsphotography.com/uploads/1/3/1/0/131070351/3608946.pdfIn PDF document text
    • http://files.raphaelpilgrimage.org.uk/uploads/1/3/0/9/130969372/talubozuzer_borad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/admin_officer_interview_questions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6557/3537/files/water_pollution_problems_and_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/15951804020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6876/6873/files/61785060713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9446/files/agronomie_cours.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0441/8455/files/instagram_auto_liker_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/44917087072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2013/1236/files/dukawubixavafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8868/2915/files/55857388678.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000783c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x783C 8292 bytes
SHA-256: f6cfbc7a7301b919781062f44240ee32640c5785486c3e2985ecc278e4b40763
font_01_sfnt_off00009423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9423 5276 bytes
SHA-256: 2599d8ba4fd088218ff5d6f2591471786971d3bff489e2c693cda869e328407a
font_02_sfnt_off0000a604.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA604 2060 bytes
SHA-256: f93542dbf11e1b78b0e03947724839818dd350ad06a5f6d49fbf9462215d74ee
font_03_sfnt_off0000afa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFA0 6820 bytes
SHA-256: 1d8c67f5608ef4a6a9824f8d8d899a862657ea7202581c409f54200ef4f864f5
font_04_sfnt_off0000c1ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1EC 17660 bytes
SHA-256: 9aff78d254c5ceaba707c3578fbdc510f54473f2844b554fd4778dd5ccc04f42
font_05_sfnt_off0000f6f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F8 16120 bytes
SHA-256: b3432b6c6b17c1e4bee884808468ac268bbacb382b5205b8505214530cdc4367