Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a3e35fd3ec0212e…

MALICIOUS

PDF

53.5 KB Created: 2020-08-06 20:48:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b59c89f90561d1815d0e9a5d79b06e2b SHA-1: e4e991efbfeb0e6fdf323f66dd9692b4467e7b74 SHA-256: 3a3e35fd3ec0212e10bc197284b1e29ae51d6a500d0d74d22005bf045b0d4400
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with multiple links pointing to Shopify-hosted PDFs. One of these links, https://ttraff.ru/pify?keyword=esl+beginner+conversation+pdf, is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect users to malicious infrastructure via a seemingly benign lure.

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=esl+beginner+conversation+pdf In PDF document text
    • http://files.punkberrythailand.com/uploads/1/3/1/8/131856122/b260232.pdfIn PDF document text
    • http://files.salemtennisandswimclub.com/uploads/1/3/1/6/131636903/b55c01b30.pdfIn PDF document text
    • http://files.ayishamoss.com/uploads/1/3/2/7/132712003/4406568.pdfIn PDF document text
    • http://genotaz.dena-robertson.com/uploads/1/3/1/1/131163599/870773.pdfIn PDF document text
    • http://files.kylesteffensmotorsports.com/uploads/1/3/0/8/130873758/3383838.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/1/0436/9917/5579/files/zuwulome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/19119121684.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/appareillage_schneider_odace.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5120/3225/files/49707721452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6784/2465/files/kovavok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4659/0872/files/celestine_the_living_saint.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/26956264949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8199/0295/files/bagomorinipodaxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6810/4610/files/vubezilusazaxejozisib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9286/9281/files/66374360261.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0881/9349/files/64190591279.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 5

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_off000092f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92F1 5480 bytes
SHA-256: f42c5020a29bd68e5432520d4bfb947d641e835d3924d315873138b1f610692a
font_01_sfnt_off0000a5ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5AD 10428 bytes
SHA-256: e6c2e050735cc96aa4a7bcd4c1b740bca6194d32a8050823559de857fc42ba1c

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