Malicious PDF — malware analysis report

Static analysis result for SHA-256 176aecda03818923…

MALICIOUS

PDF

62.0 KB Created: 2020-08-22 23:25:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c96d6188f19cfea4a58fa03e3344727d SHA-1: 4852f5f77161e11af483a7895f0a7b778737ef11 SHA-256: 176aecda03818923667ac199596465267bb3356b2984b7a8fd85fbd27ea0ae34
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This indicates a phishing attempt using a link farm to lure users to a malicious site.

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=yii2+activeform+textarea In PDF document text
    • http://files.12250parkway.com/uploads/1/3/0/9/130969211/b29c6dea99.pdfIn PDF document text
    • http://files.yatesclassroom.com/uploads/1/3/0/7/130775308/lepadan.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/1/0432/8315/3056/files/12352659738.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/advaita_vedanta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8323/3448/files/xewovujadenevixobakewifa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17232613021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8126/1466/files/vuxomufagatafuruseroge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3864/4136/files/baixar_parasitologia_humana_neves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2635/7143/files/54552827039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/to_the_lighthouse_stream_of_consciousness.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8148/9813/files/tojakege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0376/8996/files/13116048411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0072/files/78764247503.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 3

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_off0000a615.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA615 5040 bytes
SHA-256: 54d6e79b46b8069455582c9978c9ec1a1c07dff1edad8ebd6e0f9cf0513dae43
font_01_sfnt_off0000b720.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB720 16680 bytes
SHA-256: 4be2f6344400d761f8bc6e94651a28215cd0fd0a4b27df91535c99356f1d1002

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