Malicious PDF — malware analysis report

Static analysis result for SHA-256 b53de2cead3fd68e…

MALICIOUS

PDF

37.0 KB Created: 2020-08-14 17:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 947b138ab48e018c35f55847edb4f5c9 SHA-1: f8465d00b6090484fbc7dc90dbd947182fbf01a9 SHA-256: b53de2cead3fd68e48746d11338cba20be4909f98249b3987b3feb4daa16544a
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a lure, referencing popular search terms. This suggests the document's purpose is to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of direct payload execution.

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.ru/pify?keyword=ayo+and+teo+dance+videos++2017 In PDF document text
    • http://files.santiagolopezphoto.com/uploads/1/3/1/1/131164011/6eeadac8f24dd.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/1/0434/8562/6520/files/98287617607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8878/2236/files/tugevabopukedunore.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7618/1398/files/number_of_weeks_in_a_year.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1714/0386/files/euro_pick_up.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3365/7507/files/33893704974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6786/6278/files/cash_loan_agreement_format_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6147/7527/files/rabibugedujiwonizupipixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9085/3540/files/dogosumamoxafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/77231738039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/medarovadujagowurevasote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5621/5702/files/antioxidant_activity_of_flavonoids.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/60938845428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5751/1590/files/rawosakazijitatoxiw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4514 5364 bytes
SHA-256: 6b8ddcde01e7f5858d5f23a7c60a4c265ffb89ae80a058753fa8ec15d430f62b
font_01_sfnt_off00005770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5770 2132 bytes
SHA-256: 97f4e321c4337394321b9d74f16a77a62b54c40bc612b2b21f5eba016a7c0d4e
font_02_sfnt_off0000612b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612B 11052 bytes
SHA-256: 217503763071e3d935da4983c74c993d9c928f16c85d4c52984f5921f51141db

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