Malicious PDF — malware analysis report

Static analysis result for SHA-256 61f16b5ebcc3c4a3…

MALICIOUS

PDF

54.8 KB Created: 2020-08-16 11:21:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 68e4ea9bc980731ef7f34030959f1b90 SHA-1: 73523d7b0efdbee3cffd8d70b004032cf07584cb SHA-256: 61f16b5ebcc3c4a35f77c918b6511747ab4f7be0b35c5216ff0a6ad9b9f9e64e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=bleach+brave+souls+beginner+guide+2018', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to direct users to malicious infrastructure. The presence of numerous other PDF links, many pointing to Shopify, indicates a potential link farm or SEO manipulation tactic to distribute malicious content.

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.cc/pify?keyword=bleach+brave+souls+beginner+guide+2018 In PDF document text
    • http://files.sparker82.com/uploads/1/3/1/4/131483343/2803877.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/1/0440/0332/8150/files/sickle_cell_disease_genetics_and_geographical_distribution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2654/4802/files/sapexima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4994/2176/files/95612516019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1984/5277/files/diablo_2_bowazon_build.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/call_history_details_app_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9717/0847/files/performance_appraisal_ppt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5547/1006/files/suzubaponejititofij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84302935330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3528/6943/files/tiwekaxegezivisimor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pegumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/68351183061.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_off00009646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9646 5972 bytes
SHA-256: 166344843219694c7c90adc1d89d3cf171fdccd453ffe0511483fdf17c4e976e
font_01_sfnt_off0000aa93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA93 10452 bytes
SHA-256: c50969bca2438ace8924e6d768fe303a18e6fc4ae7c94487d43915e96d174f4b

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