Malicious PDF — malware analysis report

Static analysis result for SHA-256 915bb6872f50f17a…

MALICIOUS

PDF

34.4 KB Created: 2020-08-08 17:52:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 978bfd139adcb9af3b9fd430adbb6495 SHA-1: 9fcfa5fbae84e1dbf3be1aede6a486fca9798911 SHA-256: 915bb6872f50f17adb1a193939c6898f29f58790cfd90d296f7c7bc847a7559b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a link to a PDF about 'access consciousness libros pdf'. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF files, many hosted on Shopify. The ML classifier strongly indicates maliciousness, and the overall structure suggests a phishing or redirection attempt to a malicious site.

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.com/pify?keyword=access+consciousness+libros+pdf In PDF document text
    • http://files.alphachichico.org/uploads/1/3/2/7/132740234/2485425.pdfIn PDF document text
    • http://files.moonhighclassof1971.com/uploads/1/3/2/7/132741128/roporijekakif-rexumopugoz-vezuxaxezuxiga.pdfIn PDF document text
    • http://files.cafe160order.com/uploads/1/3/1/4/131406348/9151546.pdfIn PDF document text
    • http://vefumuvov.wylieeasttheatre.com/uploads/1/3/0/8/130814397/mawidenika_kidom.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/48787523288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0688/6051/files/rogadufigatalefudutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/54999233539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2689/8344/files/40585055812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8815/5558/files/ectomorph_training_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9945/3608/files/7089444626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3568/1180/files/vedoreju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5302/1334/files/vepuzoleb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/rapozidugapoxejurizox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/7_days_to_die_mechanical_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9262/3001/files/84211510956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6091/9446/files/dajenaniwovuxikunedagumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3595/9191/files/19039464976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1302/0570/files/toledini.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 8

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_off00004a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A48 5068 bytes
SHA-256: 0f9f9425766af2f0da1e063ec55cdb456752ef54b0c3ab5e17afe93f4f9f81b2
font_01_sfnt_off00005b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B8F 9692 bytes
SHA-256: b8102f4c04462425ba81ccd635f8d707c6222075ffc1b5152f7b64101f1c96dd

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