Malicious PDF — malware analysis report

Static analysis result for SHA-256 743048e9e50fa03f…

MALICIOUS

PDF

46.8 KB Created: 2020-08-18 20:07:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6875bde1924af7a8b53e25492d2df7d7 SHA-1: 6b366147bcc70a647b47370db73e6fac330048b0 SHA-256: 743048e9e50fa03f6cfe9383b9d73b0c2718ea59c17f88b11990ce4865221f7d
194 Risk Score

Malware Insights

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

The PDF contains a sensationalized headline about a medical cure, which is a common lure for phishing or malware distribution. It embeds numerous links, including one to a known malicious redirector at 'https://ttraff.ru/pify?keyword=hiv+reported+cured+in+second+patient'. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded links suggests an attempt to direct the user to malicious infrastructure.

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=hiv+reported+cured+in+second+patient In PDF document text
    • http://files.zebradental.co.uk/uploads/1/3/1/4/131437311/7002933.pdfIn PDF document text
    • http://files.patelp.com/uploads/1/3/1/3/131381428/3681553.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/1/0428/6958/8124/files/wobovaxapifopalamisofan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fenajowogotuxukat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/chakravyuha_movie_songs_in_kannada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0454/9531/files/aua_guidelines_prostate_cancer_staging.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5802/8959/files/nexikobobisugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4823/9257/files/asia_river_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/ds_emulator_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7708/4070/files/30875048597.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/7895/5687/files/airbus_a320_cockpit_panels.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8609/4248/files/hazmat_incident_report_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5512/8477/files/teregure.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_off00007a17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A17 5056 bytes
SHA-256: f04eec55152e8cf875da979b3e95a9e8b01df7862b90ff7e6049f92299299b2b
font_01_sfnt_off00008b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B50 10312 bytes
SHA-256: fab5031796311299c455b9e966d640439895b3d4589d6f1d0900e92413aeb39b

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