Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f49cf1551dd594d…

MALICIOUS

PDF

45.9 KB Created: 2020-08-10 10:41:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9f08f31798cd3148701b710aec4a4b7 SHA-1: ddeb3a359c3414fd4a0dc569995e2cdeb60d64ee SHA-256: 8f49cf1551dd594d1a456e34e274ff4f558de4efa095e846e94885a8abfec0ff
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=sql+tutorial+pdf+w3schools', indicating a lure to disguise malicious activity as a SQL tutorial. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. 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.com/pify?keyword=sql+tutorial+pdf+w3schools In PDF document text
    • http://files.messphotography.com/uploads/1/3/0/8/130873822/8395091.pdfIn PDF document text
    • http://gelot.kutyslab.org/uploads/1/3/2/8/132814930/e1f2523a1ef8.pdfIn PDF document text
    • http://files.islandhillfarm.ca/uploads/1/3/1/0/131070367/5972948.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/1/0430/1009/7313/files/38207540285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/6263/5168/files/gearbox_types.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3183/0421/files/xodebotilos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1522/4996/files/lufikavumotuwabegusa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/37629644290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/aashto_standard_specifications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3176/3864/files/89472999267.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3373/9932/files/61603374114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2117/1873/files/nelojenosovuviroramove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2812/7645/files/biochemistry_stoker.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFF 5728 bytes
SHA-256: ae1d8f33672fefcd3d3704f428532fbcaaff5edd04cac759616f31a8d5ec2ddd
font_01_sfnt_off0000728c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x728C 10192 bytes
SHA-256: 37e44db4105b33fdad949f367a05cb3c348d22feb5b44363bfd5ca6cc2c4ba15
font_02_sfnt_off0000959e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x959E 16076 bytes
SHA-256: 75fb5eda6c80430b94b20cb0daa906e0e98a9f633c3ecfcf71c743d7414a59fc

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