Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d9049a9b8be238c…

MALICIOUS

PDF

45.9 KB Created: 2020-08-03 08:47:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: efe814ffd70368e52bd5ab7a7935ce5f SHA-1: 502c85734a56ee4793669faa52f8e0ef04bee390 SHA-256: 5d9049a9b8be238cb7b9adcc52d56e75f81e8a3a81f50deb0ea8827f59161aeb
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service identified as malicious. The document body, though heavily obfuscated, contains URLs that likely serve as lures for a phishing or scam campaign. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector suggests an attempt to lead the user to a harmful site, likely for credential harvesting or malware delivery.

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=avl+tree+java In PDF document text
    • http://files.jazikatxox.com/uploads/1/3/1/3/131379740/sebixejajawaropan.pdfIn PDF document text
    • http://files.peppertreegoldendoodles.com/uploads/1/3/1/3/131378942/kalarivo.pdfIn PDF document text
    • http://files.chefzanderault.com/uploads/1/3/1/4/131437677/639afbe.pdfIn PDF document text
    • http://files.schilbersjewelrycastle.com/uploads/1/3/0/7/130776088/4bff4411f41b8e6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0723/7531/files/dino_gate_ark.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9580/9431/files/bissell_spotbot_33n8.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6535/2093/files/81441772094.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9453/9429/files/nelagarewejisedefemudoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/52340598466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0506/6913/files/xomopufolitat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/jemupexibasigoduku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/ropejozotaxavabizimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1325/7885/files/fopizox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8114/5243/files/tobapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/94685179241.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4641/1167/files/42014567190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/74654318431.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
    • https://algs4.cs.princeton.edu/33balanced/tinyST.txtIn 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 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4D 4152 bytes
SHA-256: 33e8cb7eb9c724ebc603c9c257fb5041595d2256bfcce2d4f5dc115fed0e3a04
font_01_sfnt_off00006d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6D 14528 bytes
SHA-256: 91be97c287ce9bb1b9d9585844d96c945a732991ad43bbe7add43af957b839a1
font_02_sfnt_off00009b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B4C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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