Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b6d6a353de9d272…

MALICIOUS

PDF

43.9 KB Created: 2020-08-20 14:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9b6a1d076709352408f69faf7e28694 SHA-1: 27521c202585642d5882638569b0ee8f0e3bc440 SHA-256: 3b6d6a353de9d272df676621d8aa8419fa27b70c65c6a4fb69872d7ce3979499
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links, 'https://ttraff.ru/pify?keyword=treatment+guidelines+for+constipation+in+pediatrics', is identified as a malicious redirector. The document body itself is heavily obfuscated but contains references to this malicious URL and other benign-looking Shopify URLs, suggesting a link farm designed to distribute malicious content or engage in SEO poisoning.

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=treatment+guidelines+for+constipation+in+pediatrics In PDF document text
    • http://files.monarchmountainretreat.com/uploads/1/3/2/7/132740692/ce2d2.pdfIn PDF document text
    • http://posimulen.wheektown.com/uploads/1/3/0/7/130775897/298188.pdfIn PDF document text
    • http://files.arkspeakingandtraining.com/uploads/1/3/1/3/131384101/rijefufediv.pdfIn PDF document text
    • http://files.qmworkplacement.com/uploads/1/3/2/6/132682882/6141691.pdfIn PDF document text
    • http://files.olgabaptist.org/uploads/1/3/0/7/130776407/makotapiv-jozan-jakabiwunabafom-tezejore.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/1/0432/3088/8094/files/76170331275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7948/9950/files/netgear_dynamic_dns.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3359/9893/files/62886493460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5312/0664/files/87834773486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2458/7674/files/kejonutuvivilefaxogifu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4827/9957/files/19730196774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3141/3415/files/61260622510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8510/2237/files/zowigumesevovuwamoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6123/8168/files/totototurolarobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2355/7030/files/22149877354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/90016603378.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 7

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_off00006aeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEB 5424 bytes
SHA-256: 1a05dbb458114172fb0465a52348acad6b4b0357ef45a511edadb18db841559e
font_01_sfnt_off00007d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D46 10860 bytes
SHA-256: 5c4849f4b362cede366f5ce87fa29f83f460996af0b0531a383d4c464df4960b

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