Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dfb2d5bfae67793…

MALICIOUS

PDF

42.0 KB Created: 2020-08-25 07:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 50006fe3e84f0cdd013282c3ccce2f3b SHA-1: 6e5e73ab11930270edde9ff5d00130f6b98fabca SHA-256: 2dfb2d5bfae67793e9535cbc0d23f5616afece8d2467c38e2633bedfbe2ec230
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, identified as a PDF link farm. One of these links, https://ttraff.ru/pify?keyword=tra%25C3%25A7o+falciforme+doenca, points to known malicious redirector infrastructure. The document body contains garbled text but also includes the same malicious URL and several other URLs hosted on shopify.com and a custom domain, suggesting a lure to external content. The primary attack pattern is the use of these links to redirect the user to malicious sites.

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=tra%25C3%25A7o+falciforme+doenca In PDF document text
    • http://files.andriamesselt.com/uploads/1/3/0/8/130814235/4303661.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/1/0433/6710/4668/files/metallica_enter_sandman_ringtone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7597/5830/files/memamutugolapijipi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/middle_school_vocabulary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/animation_in.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2872/5405/files/sotogenazarozerujiwojoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kividerinogofigizunewif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0668/7394/files/calligrammes_apollinaire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7037/1493/files/nexifuwatonaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/lidivaxipobugizusiregale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1186/5751/files/68269862531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1573/2376/files/59671231326.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 2

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_off000061a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A2 5120 bytes
SHA-256: 146054dee64b323ab6e3ce1cf4c56dada10af2491ea6b8a760c58bbb584e8ebf
font_01_sfnt_off000072a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A9 13036 bytes
SHA-256: 4f52a6911166eefac3e631fdb2721a050bc42ad3b807455d8635c8cfade4d663

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