Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8020281f3ba9c07…

MALICIOUS

PDF

74.0 KB Created: 2020-08-10 18:05:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa06992eb4a51b505e84e2fe9cde8d36 SHA-1: a74f8e40993c8f9760026fca49b488941af9957c SHA-256: c8020281f3ba9c071c5b520e4390576971232007de7c0b3cef8b0a5c435456c4
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This indicates the primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting. The PDF also contains a large number of external links, suggesting a link farm or SEO poisoning tactic.

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=lagrange+s+mean+value+theorem+pdf In PDF document text
    • http://files.monikerfoundation.org/uploads/1/3/1/4/131454012/5b5017932a.pdfIn PDF document text
    • http://files.jenkaki.com/uploads/1/3/1/4/131482941/kinerupatodalaga.pdfIn PDF document text
    • http://files.swansonvideoservice.com/uploads/1/3/1/3/131381804/9691300.pdfIn PDF document text
    • http://fukubudap.bqpublishing.com/uploads/1/3/1/0/131071021/aa839a1b87.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/1/0437/3318/8762/files/xununifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8126/1466/files/48760297689.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7548/5339/files/6970676970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6123/2294/files/catamenial_pneumothorax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5557/1356/files/34398710080.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78476378890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/50486689917.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0028/1762/files/lomibizawoxujikonu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/koziz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6881/7569/files/jitaduxiledat.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 6

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_off0000becd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBECD 5456 bytes
SHA-256: b3841b1c23de59842d0c8229af11b83af9784e7ab1bc9a1d06e1b5aa985ebadb
font_01_sfnt_off0000d139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD139 15796 bytes
SHA-256: 7e1fb00b73d139a41e8f20aafb0257b893465bc107c482201d4868a56dd8936c
font_02_sfnt_off000102ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102AD 16828 bytes
SHA-256: feb86654da44313fbca0b96430969f1ad862a1afc7a3d745d5aab2c8a72f0893

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