Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fcf19b675c1622a…

MALICIOUS

PDF

51.9 KB Created: 2020-08-07 21:04:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2ede43de119614e76ee0020b8d8eef8d SHA-1: f54a5c6754682e8ee495d0e2cf02e07955d41815 SHA-256: 1fcf19b675c1622a883160a2fdc1107e1a03ecb3b48900b6d358ad137c02ad02
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link to 'ttraff.ru' is identified as a malicious redirector. The document body, though heavily obfuscated, also contains the 'ttraff.ru' URL, suggesting it is the primary malicious destination. The presence of numerous links, including the malicious one, indicates a link farm or redirection strategy to obscure the final malicious payload. 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=examples+of+irony+in+literature+pdf In PDF document text
    • http://files.michaelbrownslawoffice.com/uploads/1/3/2/6/132682335/8a4955ff69.pdfIn PDF document text
    • http://files.helenflockhart.com/uploads/1/3/1/6/131636845/jusanexu.pdfIn PDF document text
    • http://files.ectacfl.net/uploads/1/3/0/8/130813997/147470d8afff7a.pdfIn PDF document text
    • http://files.esspreespringers.com/uploads/1/3/1/4/131409309/a77dc38.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/1/0428/9354/1535/files/mini_14_full_auto_conversion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/descargar_biblia_de_estudio_reina_valera_1960_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3019/9966/files/17125152929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/54363224214.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6604/1244/files/koxivifofatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/ravane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4291/9832/files/90114138628.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2668/5850/files/bellingham_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/86012701518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6238/6079/files/35805190489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5296/5789/files/75724435742.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8036 5196 bytes
SHA-256: 7250a2f2bae06b3747289aa7a74bd67e3296f637b1a7676650bd1f201ef90da4
font_01_sfnt_off000091d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D7 10288 bytes
SHA-256: 476eb633e331cdf732aecbaf15650608bbe43931537e8e0cfb3f981ad58df6e1
font_02_sfnt_off0000b4b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4B9 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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