Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c5d47221eed2c76…

MALICIOUS

PDF

45.4 KB Created: 2020-08-07 08:30:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 743617e32fa4cd09702410af46c1698d SHA-1: 09b13febf1879187fe6c4870fc595932870e9d2f SHA-256: 6c5d47221eed2c76c463ce13da3484f78216340cdc883c69553bea3403fa07b6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service that is known to host malicious content. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests a phishing or scam attempt using a link farm to distribute malware or lead users to malicious sites.

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.cc/pify?keyword=batuan+sedimen+silisiklastik+pdf In PDF document text
    • http://fitif.sheamccarthy.com/uploads/1/3/1/3/131398020/lizumirarot.pdfIn PDF document text
    • http://somuxuko.colebrookwoodcraft.com/uploads/1/3/1/3/131383314/3948515.pdfIn PDF document text
    • http://files.blwcenter.org/uploads/1/3/1/0/131070561/d954507.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/1/0433/7090/5750/files/mevajupaneruwuxukepaziw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9455/7351/files/23239966612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/mimof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3039/5552/files/38356135799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/66342473046.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7936/7845/files/5851115482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7978/4866/files/jijaxinuzejigedunisibupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/roku_com-_link._appspot_flickr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9070/6589/files/xukodukovadavafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9181/2767/files/tratado_de_anestesia_regional.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/34653010894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3009/2712/files/peter_drucker.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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_off00005f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F71 5204 bytes
SHA-256: dffa25e1ef269d291aff5547a6fd46c5c8c57dac0f33a47ed4e869402e14c849
font_01_sfnt_off00007119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7119 9880 bytes
SHA-256: 81a0a621f2fa46b60a0412d769ad122c2499aeda543af59a195e58e594cc4f1d
font_02_sfnt_off000092f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92F7 16376 bytes
SHA-256: 069f5cdcb972b33999f3dc18a3e5b847fc2aa024b7c5b45b4734cedf253a8e5c

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