Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3157c70f33a59c8…

MALICIOUS

PDF

42.0 KB Created: 2020-08-07 17:19:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fe2d27b89c31fed1e09d74bacacbd349 SHA-1: 0f55c2a3d6326cb6430d6e1f45232214251fa735 SHA-256: b3157c70f33a59c842fd4c6f7b4ac055ffad77034b040e07782a62117312d211
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This redirector is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the text 'literary analysis essay rubric pdf' alongside the malicious URL, suggesting a lure to trick users into clicking the link. No scripts were extracted from this sample.

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=literary+analysis+essay+rubric+pdf In PDF document text
    • http://files.cariboucafe.com/uploads/1/3/0/7/130775959/ludezamizuzagazu.pdfIn PDF document text
    • http://xifekoki.1968mhs.com/uploads/1/3/2/6/132682076/jukukemasurumofajepu.pdfIn PDF document text
    • http://files.joselinehardrick.com/uploads/1/3/1/8/131856433/6965939.pdfIn PDF document text
    • http://files.foreignpressassociation.org/uploads/1/3/0/9/130969241/ritomup.pdfIn PDF document text
    • http://files.josephhickman.com/uploads/1/3/0/7/130776826/kalopinaga_rudonef_mumufepofura_tavap.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/1/0429/8250/6647/files/99052059451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/zizixo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4373/2126/files/duvavurejowifuzikit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/66300857602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6428/5598/files/12029197391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/pukusofofumuxuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6138/7170/files/22866481515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9768/5157/files/13601659894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/59709827573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0243/5483/files/98993850252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9282/0647/files/75002318496.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_off0000682e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682E 5332 bytes
SHA-256: f43456f0ca24018525e58010c8037cb1cc2dc83f8579ee8343de7fb425fa256f
font_01_sfnt_off00007a60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A60 9608 bytes
SHA-256: b891a5112924cdce1e41a6ffdf11b5bdc19ca21b0d3e2f9749ec2b49511c4ad0

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