Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f0976da5199a97…

MALICIOUS

PDF

41.0 KB Created: 2020-08-14 09:06:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 13da0646d7c944b00411ac79fabd2a51 SHA-1: fa840481141766abbb8fc0ec0a67be7f197a58cb SHA-256: 38f0976da5199a97c1503dbe5c743ea93b103c99cae4d9f559c012a5d484f036
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, characteristic of a link farm. One of these links, https://ttraff.ru/pify?keyword=avd+manager+not+showing+in+android+studio, is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The presence of a malicious redirector suggests an attempt to lure the user to a malicious site, likely for phishing or malware distribution.

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=avd+manager+not+showing+in+android+studio In PDF document text
    • http://wegebewi.evolvepaintcolorado.com/uploads/1/3/2/8/132814930/1380628.pdfIn PDF document text
    • http://rixig.dechineselincs.com/uploads/1/3/1/4/131406717/dedopek.pdfIn PDF document text
    • http://files.sheafferselect.com/uploads/1/3/0/7/130739362/5526db24.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/1/0430/4555/2290/files/dudinujiwazupufezaribax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6667/0745/files/50728453585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8737/9094/files/dujegetimuwifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/rupekerenuguzodub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/bunegunipisemabedumuponez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/82174030608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3137/8592/files/99787548711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/22736120140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8611/7019/files/lenilula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8880/9889/files/official_methods_of_analysis_of_aoac_international_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0177/3212/files/niragedupuserivibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3593/5388/files/4634415668.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6577/7059/files/tai_chi_24_form_tutorial.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

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006296.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6296 5348 bytes
SHA-256: 96197d969bc21e6d178775ffe757092962aef4e99bfec70ed69d35f52837c3dc
font_01_sfnt_off000074a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74A7 10132 bytes
SHA-256: b091634cf64f8dea8405684d825d4fd17c6409e152ab2c4023551e177597b35e

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