Malicious PDF — malware analysis report

Static analysis result for SHA-256 381a5bcfe62dc195…

MALICIOUS

PDF

45.2 KB Created: 2020-08-17 07:12:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ba610a8bdc5d979588afb3e1064b552 SHA-1: 12e6a6accf8e1ba169e99fb69b640be784883d53 SHA-256: 381a5bcfe62dc195f9f81557adab99fa28605cf464f8c37c98fece5c50dd5f17
202 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 other PDF files hosted on various domains, suggesting a link farm. One of these links, 'https://ttraff.ru/pify?keyword=reea+feat+akcent+rain+song+mp4', is identified as a known malicious redirector. The presence of a visual download button lure further supports the malicious intent. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact payload or ultimate goal beyond redirection.

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=reea+feat+akcent+rain+song+mp4 In PDF document text
    • http://files.tmichaelstone.com/uploads/1/3/1/8/131871952/09e21c4bc4086.pdfIn PDF document text
    • http://jugizuz.surfacedesignbymaryjane.com/uploads/1/3/1/8/131871650/koxufagakoro.pdfIn PDF document text
    • http://files.sylvielouagie.com/uploads/1/3/2/8/132814071/doxurotevopif_fibutisa.pdfIn PDF document text
    • http://files.natalieunisexandbarbershop.com/uploads/1/3/1/4/131453208/4093005.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/1/0434/3008/4760/files/beekeeping_training_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1097/3083/files/24130517091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2092/2528/files/analytical_chemistry_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4051/7792/files/monita_tahalea_kekasih_sejati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/64190399815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/gumidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7872/files/668339115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/cartoon_video_picture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/82772016946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2617/7438/files/zukotojiwilapenorox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0096/9896/files/chapter_18_endocrine_system_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8212/1377/files/92238109661.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53E5 5464 bytes
SHA-256: 7e97fc5f73cd916945a9a58d5db148dcbde235e23198e228f2532ad19a3c4dd4
font_01_sfnt_off0000667a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x667A 10256 bytes
SHA-256: fe4fcae61834fb9b0b0cef5b29c3fdcf7496aab859f8d95112cf83dff86fd390
font_02_sfnt_off000089d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89D3 18776 bytes
SHA-256: 001d00114279cda904ec87ee5caf81ece5266ef333c342f0ca5ce216f4908131