Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6522262d3d084f3…

MALICIOUS

PDF

46.8 KB Created: 2020-08-02 21:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a4b8b9281457cd79b99347e50dcd700 SHA-1: 702074134af4ed75d4d149dc695134c454d7e700 SHA-256: e6522262d3d084f33928e1a351a9ad09dfc5b199d180a1281698d311c36950ff
194 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL and references to 'apriori algorithm in java', suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy. The ML classifier strongly flagged this PDF as malicious.

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=apriori+algorithm+in+java In PDF document text
    • http://files.keysafesecurityspecialists.co.uk/uploads/1/3/1/4/131437941/jopek.pdfIn PDF document text
    • http://files.madaboutlabs.com/uploads/1/3/2/7/132710563/7844858.pdfIn PDF document text
    • http://files.jenholmesmededit.com/uploads/1/3/2/7/132740296/0a0b5d4fd1cdf.pdfIn PDF document text
    • http://files.richardsavenuebusinesspark.com/uploads/1/3/0/8/130874175/4449038.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/1/0431/0908/9447/files/sagisexopoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4179/1900/files/wonobizofoje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ziduvawijixivobufanevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8350/5570/files/gagol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5664/4774/files/32516131089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/wifi_extenders_target.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4533/6726/files/fovexuzujamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/kudatuloxadotakewavok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7652/7014/files/62354160522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91960476686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0087/9515/files/fake_love_stereoday.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 4

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_off0000697f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x697F 5180 bytes
SHA-256: 4d22587b13ba67d9b9c18259fc29caf29da4b737f431f559565664091dbf1292
font_01_sfnt_off00007afe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFE 15560 bytes
SHA-256: c8882076623dee17ef4af775cb7d52222aed810a544cc325eb2e1ccd9e3778db

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