Malicious PDF — malware analysis report

Static analysis result for SHA-256 54139566ca120ec2…

MALICIOUS

PDF

40.2 KB Created: 2020-08-14 17:12:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 629d17d166acbbd452490b109b31ba75 SHA-1: 341b723d6261f78a7520000bbef7c93612d8541c SHA-256: 54139566ca120ec23d07c9cbc9acea0151a5e22907ba46e933f28badd7b4c7e1
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=printable+alphabet+worksheets+free'. Additionally, it exhibits a PDF link farm pattern, with numerous external links, many hosted on Shopify. The presence of a visual download button lure further supports the malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=printable+alphabet+worksheets+free In PDF document text
    • http://files.rbpayne.com/uploads/1/3/0/7/130775652/14ad96c5650.pdfIn PDF document text
    • http://files.womenofthemorningstar.com/uploads/1/3/0/7/130738794/goniviri-venumeno-dafikaxukavima-wedipaze.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/1/0430/2739/8807/files/19032719154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/libulewipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7068/4317/files/18292575481.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9869/files/39837693850.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2084/5210/files/84503956914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8347/2791/files/74965136418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4152/0790/files/fojenukawutazal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3230/5054/files/10237516630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5298/9605/files/borulanimidozudig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/resizanabotufigoxidofaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8062/0955/files/43234597760.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 3

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_off00005b15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B15 5288 bytes
SHA-256: b2948b279dc15c3c68fa87a2c610e66b8da14d865f6cc50362240ec7d946956c
font_01_sfnt_off00006d12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D12 11604 bytes
SHA-256: e46ff63a13ab017b7a7817ba9a2082b0053a0bff8c59ed0a0d82189495eb78df

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