Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c772897018439f7…

MALICIOUS

PDF

39.1 KB Created: 2020-08-08 18:15:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 06f7e5d3fe08e20128426ecff9f7e3cc SHA-1: b2ff2017c9771e86a8c94eed67dc1db992491ff4 SHA-256: 3c772897018439f70110ff69b922990fce77f7adf4c6649c3ac44bdc46a99577
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing lure. The primary redirector URL, 'https://ttraff.cc/pify?keyword=aplasia+medular+en+el+embarazo+pdf', is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, indicating an attempt to trick users into clicking it for a supposed PDF download. The ML classifier strongly supports the malicious verdict.

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=aplasia+medular+en+el+embarazo+pdf In PDF document text
    • http://kigofese.rdaxpress.com/uploads/1/3/0/8/130874330/e610ff42.pdfIn PDF document text
    • http://files.hugheslandscaping.com/uploads/1/3/0/8/130813612/seketelab_xumanagas_gakazotija_zoziz.pdfIn PDF document text
    • http://files.juliagay.com/uploads/1/3/1/4/131409305/2757760.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/1/0437/7539/3944/files/how_to_upload_photos_to_google_drive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/employee_notice_letter_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nudukesobiji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5949/4555/files/nevebeximexozene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9569/4239/files/swords_and_sandals_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/32798666132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/18113025230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1594/6911/files/negafuxiporasalija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/upsc_cse_maths_optional_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3463/9522/files/xabijenuremurur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/xofikodumuzunamiwoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/automobile_engineering_textbook_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7812/2649/files/gumoworufupasezadav.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 3

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_off00005a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A69 5368 bytes
SHA-256: 8a4df3862382a1e056fc2e43bc6850788193c89dd18cb346973e39137887d2e2
font_01_sfnt_off00006c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C92 10704 bytes
SHA-256: f82adb8ae8d8170a2adcd61e44a981a686fc44205123a0db311123a5561aadc9

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