Malicious PDF — malware analysis report

Static analysis result for SHA-256 88e7a2206a638dac…

MALICIOUS

PDF

41.6 KB Created: 2020-08-07 08:03:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9f706d4da296122c4cd84cb66ed0817 SHA-1: 1af33407b970eb53589a3afa2af0604008abc400 SHA-256: 88e7a2206a638dacf0231ceab1c15cf5c03cb0a5476a30ee129eebfe57d45bcb
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to an SEO redirector, which in turn points to a malicious URL. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking PDF links, suggesting a link farm designed to trick users into downloading malware. The ML classifier also strongly indicated maliciousness.

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=cultural+factors+affecting+consumer+behaviour+pdf In PDF document text
    • http://files.mydearestbaby.com/uploads/1/3/2/6/132680813/gurutagu.pdfIn PDF document text
    • http://files.one-common-ground.com/uploads/1/3/0/9/130969206/1e173f34cb.pdfIn PDF document text
    • http://files.4sapservices.com/uploads/1/3/2/6/132681560/229853.pdfIn PDF document text
    • http://files.triceceramics.com/uploads/1/3/0/9/130969368/xexedunekeko-podani.pdfIn PDF document text
    • http://files.mskhor.com/uploads/1/3/2/6/132682570/fewogedawox-xabuguj-dajelenudunexo.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/1/0435/8271/8107/files/tufarogijusejegilazizoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/31297004208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3103/6053/files/java_8_collections_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1184/1958/files/56627971865.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8731/4585/files/windows_xp_sp3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/pufadifesudigavuneze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9870/9918/files/concentric_zone_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/dodorijowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/calcium_dietary_sources.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8904/4383/files/vipopavufukire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7861/4168/files/tonakizatokol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5526/6457/files/75325838846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1550/4029/files/36857947666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9177/7952/files/americanah_summary.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_off000065da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DA 5676 bytes
SHA-256: 7fdff1557eaa6b0b277ab2ca3ac9401510f3e41d29d09a631684f8aa5d4692be
font_01_sfnt_off000078f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78F7 9260 bytes
SHA-256: 9331417bac5eb3f5cb6ca6071c8490d7d57690a5dff1f11e73dd32b220983fac

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