Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a7a3adcda875e11…

MALICIOUS

PDF

109.3 KB Created: 2020-08-24 17:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eaa61a73f11d418bb9b1bdbbdac790f2 SHA-1: 2d0f389ff335dc4186967c356fc8c2dc85521b0e SHA-256: 8a7a3adcda875e11523710e1f21c28f4bbef10f5b066301997d185b709615341
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, identified as a PDF link farm. One of the primary links, 'https://ttraff.cc/pify?keyword=ff6+characters+guide', points to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary purpose is to lure users to malicious 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=ff6+characters+guide In PDF document text
    • http://files.colorsforacause.org/uploads/1/3/0/8/130813054/fiwirituwokeri.pdfIn PDF document text
    • http://files.pintspoundsandpate.com/uploads/1/3/2/6/132681954/2500084.pdfIn PDF document text
    • http://files.delsurvey.com/uploads/1/3/0/8/130814754/kagogawisimu.pdfIn PDF document text
    • http://gawixujef.ridehebrides.org/uploads/1/3/1/4/131483281/rofagironuguwur.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/1/0434/1959/9004/files/lofilixoxopafetupinopodig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/51643677037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2020/6758/files/karafisinem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5573/5193/files/yerf_dog_go_kart_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4186/5375/files/81848133071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8717/5588/files/potoxino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7128/3098/files/dufanuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinupagudesezubinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9292/6873/files/blog_de_libros_romnticos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5814/2120/files/55875686216.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 5

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_off00014209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14209 15188 bytes
SHA-256: 6e87ca8b45b12cdbe891b65b7e42004a81c06a8db32bb366b0d6ae7acc6a40bb
font_01_sfnt_off00017189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17189 5360 bytes
SHA-256: ce800bd23d20b955a038a2fd82b5378f97877ef5d7d32a9f1d303b9ee10eb95e
font_02_sfnt_off000183c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x183C0 10496 bytes
SHA-256: 97a072695d80d919bd31ee08054e68d9c06703d4643b7e190f85c0cf541fc790

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