Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d2254b3d7af19f4…

MALICIOUS

PDF

47.8 KB Created: 2020-08-07 21:22:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87bd4c655e592e105c59465b95c3682a SHA-1: bb84db74227ee7bf272b73a4a5ffe44156a0ef64 SHA-256: 4d2254b3d7af19f4fe04ff8a462a18d339014e357f831c2834d2e8fb7cae6f18
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm and a malicious redirector URL, indicating a phishing or malware distribution attempt. The primary malicious URL is https://ttraff.cc/pify?keyword=ubqari+magazine+december+2020+pdf, which likely leads to further malicious content. The document body itself is heavily obfuscated but contains references to the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=ubqari+magazine+december+2020+pdf In PDF document text
    • http://files.cefmiwaynecounty.com/uploads/1/3/0/7/130776142/ludebolub.pdfIn PDF document text
    • http://files.jazzpaws.co/uploads/1/3/1/6/131637562/8395380.pdfIn PDF document text
    • http://dunawagit.rareblogger.com/uploads/1/3/1/4/131406893/mugovip.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4485/4165/files/32749221501.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0894/2499/files/68637051074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/15769275892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4975/2478/files/zudavaman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6159/9656/files/17762088038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6939/0500/files/fokewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4156/8421/files/zopiledawafesikunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4832/8603/files/loworafijafodojuxexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5967/5293/files/23452975924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8724/1119/files/sobodoxuruweb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/suvogetexidabesarazulifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5857/8086/files/muwakogepugesomugewudi.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4836 5444 bytes
SHA-256: 189a21eade6951fb9631f92cb04c136e3eabbae59def781d15a8cbb72bc2a77e
font_01_sfnt_off00005a98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A98 2604 bytes
SHA-256: 5fd53e2058c4f5d98b70161d670f1e42036942552fef68ac845a5e47e2d7f715
font_02_sfnt_off000065b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B9 9864 bytes
SHA-256: 097b5b1c030896f3075ba870878ac8ee2c5874bd881009dc849b9a2a0e151774
font_03_sfnt_off000087b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B5 18104 bytes
SHA-256: 01319aa4ded363944cd41e84055cf5699ad285532c28174002c851fb664427dc
font_04_sfnt_off0000a319.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA319 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3