Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d0967406c9f2a39…

MALICIOUS

PDF

43.4 KB Created: 2020-08-24 05:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 979d19b6afa805c9ca09828054e4cde4 SHA-1: b61813fb57ddaa64ea0ae533d5d783703d85fbec SHA-256: 8d0967406c9f2a390de241323cc8e7cd0212598430bd9cb45ba5a55274d1c358
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=hard+story+riddles+with+answers', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it's the primary lure. The ML classifier strongly supports the malicious nature of this PDF.

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=hard+story+riddles+with+answers In PDF document text
    • http://falade.eibenteaching.com/uploads/1/3/2/6/132682974/dujakubatir-rawemeso-sawula.pdfIn PDF document text
    • http://moside.massageandfacialorganics.com/uploads/1/3/2/6/132695535/30c1c3bb.pdfIn PDF document text
    • http://jawige.katherineorchard.com/uploads/1/3/1/4/131437949/mutetujotojisatu.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/1/0432/1263/6322/files/jasper_reports_server_api.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/31062794961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/4517/9807/files/asos_maternity_dress_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5041/8847/files/98758428516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/cofferdam_nptel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7480/5148/files/pokemon_ruby_walk_through_walls.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/1274/6390/files/dodefokivakabefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5406/4028/files/bluetooth_windows_7_32_bit_dell.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/3277/4565/files/catechesis_tradendae_en_espaol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/gitagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2135/1587/files/28492871626.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6240/2967/files/puruduzakep.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_off00006c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4B 5068 bytes
SHA-256: b539dbeeabc180533e7909df8404becd7c22e6d906c221589e17b201888d0437
font_01_sfnt_off00007d90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D90 10332 bytes
SHA-256: 48c20dff7e5b023e5f941400db89bac8b96cd91b2f92b35a96e7d5b53b2d9f03

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