Malicious PDF — malware analysis report

Static analysis result for SHA-256 34a6226a9cdd38c2…

MALICIOUS

PDF

41.6 KB Created: 2020-09-11 08:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9d82cda87f829f3c165d7fb4d53f7fe SHA-1: f6255ea2a7da74e0a1c6b2ce965cbe5e15af9261 SHA-256: 34a6226a9cdd38c2fec48fc7f09bd4ceb74acbbee384294e5feaaf7a4ad7a189
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, many of which point to known malicious redirectors or are part of a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains text related to 'Adding action bar android studio' and includes URLs that are likely intended to lead the user to malicious content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

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.me/wix?keyword=adding+action+bar+android+studio In PDF document text
    • http://files.bcmgaohio.com/uploads/1/3/0/7/130740429/xubunikuf-jadisiroxeza-memuful-tusotaji.pdfIn PDF document text
    • http://files.wpnaturespa.com/uploads/1/3/0/7/130740297/04df6dd1ca5b4.pdfIn PDF document text
    • http://kobod.moxyithaca.com/uploads/1/3/1/4/131437130/ruxixotisol-bixatutuzurumex.pdfIn PDF document text
    • http://vuxopad.medtechwearables.com/uploads/1/3/1/3/131379730/7769098.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/880a7e_a311fbd8784f4479ab2ef98d6eb2e89a.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/fc3b0b_7708db1b03834b19a8f5ceece8781743.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/739437_7518253be15546aa892365c2a0372ebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/xamuloworetikuni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8342/2109/files/47290999408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0921/1557/files/zenebiganarepa.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 8

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_off00006311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6311 5204 bytes
SHA-256: bb31bba5a7bd3f41aa5179a5298d61ec75580696b0d17c4a223fcf27c9e11725
font_01_sfnt_off000074cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74CD 11056 bytes
SHA-256: e0b5dfdbfb92906ab23dde79bdf4f7de5d6ce75ab04a3645c9ac5de0553a560f

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