Malicious PDF — malware analysis report

Static analysis result for SHA-256 240b5597df6fe685…

MALICIOUS

PDF

42.5 KB Created: 2020-08-12 04:58:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 82b39ce6abc0df466e6ebab27384e5b3 SHA-1: cc5542a5514177f08140abeb945696d79c58c387 SHA-256: 240b5597df6fe68578e6680a6bef827950a47642ed6c3142dd3438e698a3a134
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 external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically `https://ttraff.ru/pify?keyword=tipos+de+conductores+y+aislantes+electricos+pdf`. Another critical heuristic identifies this as a PDF link farm, with 15 external links. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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=tipos+de+conductores+y+aislantes+electricos+pdf In PDF document text
    • http://files.emilywood.info/uploads/1/3/0/9/130969489/wofuxe.pdfIn PDF document text
    • http://files.guliagurevich.com/uploads/1/3/1/4/131410158/3084988.pdfIn PDF document text
    • http://files.tren.net/uploads/1/3/0/7/130739856/f3ea78614de80.pdfIn PDF document text
    • http://gulirew.essentialhealthsantacruz.com/uploads/1/3/0/7/130776167/vukareguvojak-fawabaj.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/1/0433/0687/7080/files/bofudajix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/bafemabinem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6225/3978/files/vutale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7478/1338/files/microbiologia_veterinria_essencial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/bomepofake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/50306279194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/jibuvawelixoruvibavenet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9360/6046/files/36216486519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/wujona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0069/1879/files/xisupavi.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_off000066ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CA 5200 bytes
SHA-256: 28732a3dd62467c3ce9092479677c544f352335c214de6f8d1f38a89a9cc434d
font_01_sfnt_off00007886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7886 10784 bytes
SHA-256: d7e1194ade20ddac0660d6ff7dddf18c1289cf5c2bf525c3f68bb340a41d6e31

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