Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d5bc15205973d21…

MALICIOUS

PDF

52.4 KB Created: 2020-08-20 04:11:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3fbc6e6c5d75a82dd8987e531eae69bf SHA-1: 32f892802000a219ea8323349292fdf25df8a791 SHA-256: 4d5bc15205973d21072cf20c0d0560a82a24b21371f96725ac2c90f7e17e5a32
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text referencing 'Apache jmeter user manual pdf' and the malicious URL 'https://ttraff.com/pify?keyword=apache+jmeter+user+manual+pdf'. This suggests a social engineering tactic to trick users into clicking the link, leading them to potentially harmful content. The presence of a link farm further indicates malicious intent.

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=apache+jmeter+user+manual+pdf In PDF document text
    • http://lagolum.singleinsantiago.com/uploads/1/3/0/7/130739024/9341716.pdfIn PDF document text
    • http://files.shopdelmarcielle.com/uploads/1/3/0/7/130738572/zapepa_zejola_gimisuralu.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/1/0432/4897/6027/files/luwibuwug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9206/files/malevosipikalokekigugise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5744/6038/files/52261364715.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/39547979196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6529/5526/files/arcmap_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6844/9180/files/82785594925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2358/6712/files/1098t_uc_davis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4895/9141/files/tri_fold_restaurant_brochure_template_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/oval_crib_sheet_pattern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/english_to_nepali_dictionary_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2431/7596/files/latex_article_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0222/5059/files/wezinon.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 1

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_off00008513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8513 5460 bytes
SHA-256: 07ca29a50bc7d93dd5be3f64b2756f06bc77017cc7a00f76d4910d6a70d66152
font_01_sfnt_off0000977f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977F 14180 bytes
SHA-256: a2bd35025f9765c04d7ecaf96fc48e94e484f832f340990e6ea6fc3ff19e501d

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