Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b3e21e591ce67f6…

MALICIOUS

PDF

36.6 KB Created: 2020-08-26 19:38:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ef0d8ec96ef37bffe2ee89e4a6dafb3 SHA-1: a0a23fec2e66807f491504c936926915e5f94018 SHA-256: 0b3e21e591ce67f623d8df9e0ddd3a68f47cd9e578caa45100123ea0bc8de206
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or malware distribution.

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=connecting+and+linking+words+exercis In PDF document text
    • http://tononibif.momspantrykitchen.com/uploads/1/3/2/7/132740708/f850908a.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/1/0436/1663/2992/files/i_am_archer_mod_apk_android_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7945/7175/files/how_to_make_a_good_discord_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0862/1719/files/accelerator_plus_10_crack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9139/3698/files/38377046119.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bekikelazipilexujewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53975554289.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/15226627706.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1352/8987/files/37483260890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/kikuzeveguw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/77310030573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4647/7722/files/refrigeration_and_air_conditioning_technology_bill_whitman.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_off000050ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50AE 5236 bytes
SHA-256: 6b764fcf65f5bd9b41996e2a6ffc198ee0be1b54d8f2bfd6255de75633103811
font_01_sfnt_off00006299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6299 10288 bytes
SHA-256: 37b422ff2f7d190e16d2b33ba1693f26e67969c9dc29c1f53040491dc0caab9c

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