Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f36369e86854e5…

MALICIOUS

PDF

50.2 KB Created: 2020-08-11 21:23:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 79ad89fc45b855c99df9a35d0badf791 SHA-1: 2349ef9f73578035125164e1d174df08a5d81131 SHA-256: 49f36369e86854e595a9c5a91cb4144d84aaee2834964ba4df6ea15ba2e9d1dc
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=arduino+uno+r3+pin+description+pdf, which is likely used to redirect users to malicious content. The document body, though heavily obfuscated, contains references to URLs and appears to be part of a link farm strategy, as indicated by the PDF_SEO_LINK_FARM heuristic.

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=arduino+uno+r3+pin+description+pdf In PDF document text
    • http://files.preservationdayton.com/uploads/1/3/0/8/130874526/a67c477d1.pdfIn PDF document text
    • http://files.myhalloffame.net/uploads/1/3/0/7/130738720/gujoxaden_burosu_linuzawer.pdfIn PDF document text
    • http://files.lynnespaintings.com/uploads/1/3/1/3/131383424/ee8396d36c8794b.pdfIn PDF document text
    • http://saziw.alysonjill.com/uploads/1/3/1/4/131455158/wukunujofuwiguvejixu.pdfIn PDF document text
    • http://files.drawingescapes.com/uploads/1/3/1/8/131858916/f424bb.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/1/0432/8446/3784/files/gebosipetonokex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/razaxupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5488/1185/files/ambientico_una_ac_crs_ambientales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/78695806102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/xujifuxowarisixiku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4823/0297/files/zakedejulipajokopajuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4363/2805/files/19322502833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/opioid_risk_assessment_tool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rowogumidakedodovejizana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/0511/9397/files/man_in_the_box_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/kusofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/joxes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9268/0605/files/master_sanitary_fittings_catalogue.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000086fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86FB 5060 bytes
SHA-256: 1399b59445d2aa25feb3ebcf89f64f72246326edee818f315565f8c59806ec57
font_01_sfnt_off0000983e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x983E 10360 bytes
SHA-256: 1df9a8ab4860e94d058fd2bc78f2bbf3ea174c7867673483efb016864dbd6a3b