Malicious PDF — malware analysis report

Static analysis result for SHA-256 d54a70d383a22b25…

MALICIOUS

PDF

47.8 KB Created: 2020-07-28 07:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 05f84e2d0d39b983f054543bd5fc3de2 SHA-1: 2d1583379a030a2dcbb2dd379d055f7f8fde597f SHA-256: d54a70d383a22b25b37abb632dad77f89f96385c56f98d85e4429868056081a4
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a UC browser login prompt. This link points to 'ttraff.ru', which is known for redirecting to malicious sites. The PDF also functions as a link farm, with numerous links pointing to Shopify domains, likely to obscure the final malicious destination. The ML classifier strongly indicates malicious intent.

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=uc+browser+apk+login In PDF document text
    • http://files.mobilityextremadura.org/uploads/1/3/0/8/130813550/e13b602d.pdfIn PDF document text
    • http://files.stedwardfundraising.org/uploads/1/3/1/6/131606133/getotiwuxedu-jiwuvumegetuj-sagirape-pinefunojemiva.pdfIn PDF document text
    • http://files.buyafairytale.com/uploads/1/3/0/9/130970012/1783f5d.pdfIn PDF document text
    • http://files.professorwillis.com/uploads/1/3/0/7/130739746/munugu.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/1/0435/6295/9006/files/73991050469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/40174108984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7792/7072/files/14380994524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5992/9503/files/51535601633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9380/9557/files/nafukawosedakoxula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6926/7354/files/nunodatoput.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2576/7327/files/tebapatam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/sigebis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87967576867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9456/3221/files/9445614234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bixebor.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

Related samples 8

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_off000062e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62E2 5096 bytes
SHA-256: f93529dbbb02868fad2ccd7388dc1fe377c0dbfd08819715bfb642ffdf352ed4
font_01_sfnt_off00007444.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7444 14600 bytes
SHA-256: abfd1327819f5bcb082deb48616560babe57b22a8a06813bd2e9422cb58c840f
font_02_sfnt_off00009d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D02 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073

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