Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bd672852d653350…

MALICIOUS

PDF

36.4 KB Created: 2020-08-13 15:26:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7cab45a392e2be5541699f3e47356f59 SHA-1: 0a52740d36bd9aa7a08c58c8e53c809fe71903ed SHA-256: 7bd672852d653350c2046aed9f13f73c2bdad18623f09e05a52efed57cb234b7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service identified as malicious. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the primary malicious URL, suggesting a phishing or redirection attempt.

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=civitas+latino+libro+pdf In PDF document text
    • http://rujefor.friends4picacho.org/uploads/1/3/0/8/130813095/28e12f7f6848e.pdfIn PDF document text
    • http://files.speckmath.net/uploads/1/3/1/4/131437666/daxomixolosotenon.pdfIn PDF document text
    • http://files.knotordinarywoodworking.com/uploads/1/3/0/8/130814529/5424892.pdfIn PDF document text
    • http://files.samskriti.com/uploads/1/3/0/7/130775304/c8015abd4.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/1/0434/5865/8456/files/17249393251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nitopufekuriwuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0780/1504/files/meters_to_feet_and_inches.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0691/0876/files/convert_to_word_doc_on_macbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4293/0842/files/semalekujasuziket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6992/3740/files/zutuvixopigero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0261/0335/files/46271269203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1481/4885/files/clasificacin_de_los_actos_de_comercio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5526/8519/files/pizogolavimobekowaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/identifying_triangles_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5575/files/altered_chords.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 6

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_off00004cb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CB9 5140 bytes
SHA-256: e12edc956a84c8b31f746fc2f8f14f41ca2823ba3f77be204610f95c4c90f3b6
font_01_sfnt_off00005e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3A 11648 bytes
SHA-256: 4c89f67848b50f0f3606f419ca58559a2d2f77e0b3fdc30fe8a3c2e52cb3dd84

Open this report in the interactive analyzer, or submit your own file for analysis.