Malicious PDF — malware analysis report

Static analysis result for SHA-256 20ae59c041ba1bab…

MALICIOUS

PDF

69.4 KB Created: 2020-08-13 00:12:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce5994e9f7e1d43eaa89551d79bfde52 SHA-1: 1344d30d066f9cba3a7c506cef2e19798e549cd4 SHA-256: 20ae59c041ba1bab42b2fc3831f048b7fda579f71902777eba8ae438491d664c
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as legitimate resources, but the primary link redirects to a known malicious infrastructure. The document body, though heavily obfuscated, contains the malicious URL, suggesting an attempt to disguise its true destination. The ML classifier strongly indicates maliciousness, and the heuristics confirm the use of redirector links for SEO-based phishing.

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/pify?keyword=agile+software+development+principles+patterns+and+practices+pdf+github In PDF document text
    • http://files.whotookmycountry.com/uploads/1/3/0/9/130969308/toturike-jenakesunanute.pdfIn PDF document text
    • http://files.upwardcr.com/uploads/1/3/1/1/131163914/wuxedafa-lobob-nanasate-nalex.pdfIn PDF document text
    • http://files.edhamiltonstudios.com/uploads/1/3/0/7/130775350/lojojisadake-taxupuror-xelijusu-vababof.pdfIn PDF document text
    • http://lipagiv.miyps.com/uploads/1/3/2/6/132682076/zigalasitaponamejar.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/1/0433/2093/4558/files/38843010194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4262/6984/files/45891123402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/nabude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5766/7487/files/conair_hair_clippers_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/63805406028.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9785/8972/files/61949146270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7202/8833/files/dulikovevumovebiramilaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/39618530411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0273/2448/files/10_things_i_hate_about_you_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gekubamunanapomokavonata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/sevabajikobobadaniru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4106/2040/files/proposal_skripsi_akuntansi_keuangan_terbaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7965/3789/files/teen_buzz_ringtone.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a813.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA813 12172 bytes
SHA-256: 963874b65f57be0b878b98a86613660ffa82515aff0ddb16e7c4396f8b4ac82b
font_01_sfnt_off0000d023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD023 5852 bytes
SHA-256: 89f05af52253651062a71d3cf2b781997e6dd268fd011037ff8c9a8bd8f46ff1
font_02_sfnt_off0000e3f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3F2 10356 bytes
SHA-256: 833c4828eefd9dc1a10bac18fe23f8949c94c0c9e08fd8e713d0be67cbeef850