Malicious PDF — malware analysis report

Static analysis result for SHA-256 562858fa1c0e0b02…

MALICIOUS

PDF

45.2 KB Created: 2020-08-08 12:30:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9dd17a574246c4191382110297d77d6 SHA-1: 0b460ea7f8c7bfb21b8f0eb9df791170527f37b2 SHA-256: 562858fa1c0e0b0245f750de3422230e42f622d241571509976c4e0b8f9ba32c
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains but are likely part of a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is designed to redirect users to further malicious content. The document body, though heavily obfuscated, contains the same malicious URL, indicating an intent to drive traffic to potentially harmful sites.

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.cc/pify?keyword=learn+american+english+online+pdf In PDF document text
    • http://files.mrkellymathclass.com/uploads/1/3/1/1/131164112/ce3fd.pdfIn PDF document text
    • http://files.trnwestchester.org/uploads/1/3/1/3/131379700/remabaravuf.pdfIn PDF document text
    • http://files.craftedcasesnc.com/uploads/1/3/1/4/131437005/0782f.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/1/0436/1050/5379/files/bias_variance_decomposition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/jawipikaroxuvix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/a320_cockpit_layout.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8489/0790/files/panoxanejedifavewe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9289/2061/files/galivumizunisaluwida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1806/6843/files/35435195120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/warerisomovu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0016/8597/files/30993323177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6883/3436/files/a_catechism_of_christian_doctrine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8765/0211/files/chemistry_placement_test_practice.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2449/6286/files/33893059252.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000718c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x718C 5508 bytes
SHA-256: 89237f09dd5a839f29b45eaf47e89e9b5eca758d22490f455de5346c2bc5cd5b
font_01_sfnt_off00008420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8420 10548 bytes
SHA-256: 93d4bc2836e533dc7fe4bc46ed7bca6c5b107d2bf524cd7152db62f3e51aea8e

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