Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5387b43d2ca3a54…

MALICIOUS

PDF

52.1 KB Created: 2020-08-15 10:38:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5ddf63d2a677edbd0a0c6c62f40e777d SHA-1: 55c1f0c7b6458e72072d850181bd0d48e422b27e SHA-256: c5387b43d2ca3a542d97f0135136532471694c0d86edab695d704fdf80f8c806
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The document body, though heavily obfuscated, contains the same URL found in the heuristic. This suggests the primary purpose of the document is to redirect the user to a malicious site, likely for phishing or scamming purposes. The presence of numerous other Shopify links, while benign, are part of a link farm strategy.

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=brushed+cotton+fitted+sheets+super+king+size In PDF document text
    • http://files.independenceffa.com/uploads/1/3/1/1/131163718/favokajaw.pdfIn PDF document text
    • http://files.firefighterrescuesurvey.com/uploads/1/3/0/8/130814644/acb387e833b8.pdfIn PDF document text
    • http://tewuz.thevillageartscenter.com/uploads/1/3/1/4/131438563/ec6f0e43378434.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/1/0439/0204/2280/files/automatismos_electricos_industriales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/freecodecamp_tribute_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6743/9259/files/100_books_everyone_should_read_before_they_die.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2571/0756/files/letebavipeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2891/2040/files/koveza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8961/5266/files/84470892280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5798/5189/files/mifudiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3269/1363/files/arabesques_gogol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4903/3627/files/49066593087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0910/6335/files/62011391083.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 2

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_off00007efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFC 5340 bytes
SHA-256: 12ac75052c56bbaedd05e8dd453b31337f8f8ef8201f82156ceea0c40714f2b1
font_01_sfnt_off0000912c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x912C 16420 bytes
SHA-256: 5c751cd6d233067ddafc5a689fb64fc29784bb593ab34cdbaad245ca2bc4a091

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