Malicious PDF — malware analysis report

Static analysis result for SHA-256 033306f1d1151a97…

MALICIOUS

PDF

46.0 KB Created: 2020-08-19 12:27:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4e9ae2b3f1b250f23c0299d9193ceadc SHA-1: fdc81c499e93f5e011a908498d267fcafe22f0ff SHA-256: 033306f1d1151a97fd9276db40884c47e33917324e301f9c1293220476fbf5d2
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to an SEO redirector infrastructure designed to phish for free downloads. The primary redirector URL is 'https://ttraff.ru/pify?keyword=bnf+pharmacy+book+free', which likely leads to malicious content or further phishing attempts. The ML classifier strongly indicated maliciousness, and the presence of a link farm heuristic further supports a 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.ru/pify?keyword=bnf+pharmacy+book+free In PDF document text
    • http://files.fawkhamridingclub.com/uploads/1/3/0/8/130813645/sofavemobiruxe_poloso.pdfIn PDF document text
    • http://files.organicbakies.com/uploads/1/3/0/9/130969632/rusot.pdfIn PDF document text
    • http://files.mobiledetailingsandiego.com/uploads/1/3/2/3/132303123/nukadok.pdfIn PDF document text
    • http://files.esandypowell.com/uploads/1/3/1/4/131406173/8844565.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8449/6550/files/animal_cell_structure_and_function_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1412/6759/files/zalukeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/mullard_circuits_audio_amplifiers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1708/4839/files/kibejakonilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5746/9845/files/free_simple_will_template_uk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/wufefozeboxufitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/2190/5570/files/47185882212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7105/2703/files/77527839837.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/97222369441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/24261770423.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68C1 5060 bytes
SHA-256: 7784fa44ffa3716a01595c5a47ede93c741d729009e933597427a1848e843e46
font_01_sfnt_off000079b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B2 10348 bytes
SHA-256: f7d5a27630c00040ae114d9473f1b47eba0ac1e1e363f05f713b5b55af1a5566
font_02_sfnt_off00009d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0E 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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