Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4aae926193702ee…

MALICIOUS

PDF

50.6 KB Created: 2020-07-31 04:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5bdd7c5a6ace73f40d62ca181e2320f9 SHA-1: 277dbd60c13b8747f8c05637b26ebc89d3e9d518 SHA-256: a4aae926193702ee3e8eacc43040ead155c08b8388c0f0991d31668e8cf747c4
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate that the document is designed as a link farm, likely to manipulate search engine results or to direct users to malicious sites. The presence of numerous Shopify links, some benign and some unknown, suggests an attempt to blend in with legitimate content while masking malicious destinations.

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=which+one+doesn+t+belong+pdf In PDF document text
    • http://files.usanhr.org/uploads/1/3/1/6/131607662/zuzuwo.pdfIn PDF document text
    • http://files.topshotacademy.us/uploads/1/3/1/4/131438056/sezusuxokodapamexuwa.pdfIn PDF document text
    • http://files.bklynbooks.com/uploads/1/3/0/8/130873855/xedezel.pdfIn PDF document text
    • http://files.walkonuniversity.com/uploads/1/3/1/4/131437385/laraxat.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/1/0428/2938/1791/files/26892236932.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8827/1777/files/55654595215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5240/0793/files/semuvagenan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8436/5468/files/mokuneworekifativobib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0023/3110/files/dakuvanunaxel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/3495954263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/kabijemuroradu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6497/3729/files/timukowupeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8239/0431/files/11635770648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3123/1655/files/70222631425.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 6

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_off00008956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8956 5052 bytes
SHA-256: 094114b3c5e624a27ad88c70509c191233c462403671d3614fd3cca7a344c096
font_01_sfnt_off00009a87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A87 10288 bytes
SHA-256: d3ef8e21d239e23c381a990151c2a86c4ac979bf02248d4543de556d3bba3d83

Open this report in the interactive analyzer, or submit your own file for analysis.