Malicious PDF — malware analysis report

Static analysis result for SHA-256 b330506a0e68ea10…

MALICIOUS

PDF

38.6 KB Created: 2020-08-14 11:16:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 41f353674e1200a17896debd85579a8f SHA-1: 1de6f3b1dbcc25b45b64ee43e5db0fcf8d9cf7f7 SHA-256: b330506a0e68ea10ac675bf3d5f23ec6cd7254570dc015a3d7919d9ee2abd04a
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct link to malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests a large number of outbound links, many pointing to Shopify, likely to manipulate search engine results or distribute further payloads. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic reinforces the social engineering aspect of luring the user to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=perimeter+of+shapes+worksheet+ks2 In PDF document text
    • http://zadimu.backmunicipalconsulting.com/uploads/1/3/1/4/131409309/mitab-fokowagurelunem-wewodimi-posobodobisaxu.pdfIn PDF document text
    • http://files.calvary4you.com/uploads/1/3/0/8/130874433/sipebiruwuxavij_zizozowejokom_xedep_muxiveni.pdfIn PDF document text
    • http://files.aqcreations.com/uploads/1/3/1/3/131380842/fexej.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/1/0434/6000/1957/files/5e_gloom_stalker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8769/7822/files/75282245504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5285/files/72282819551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0577/9863/files/workplace_spirituality_and_job_satisfaction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/john_deere_111_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0133/1360/files/35506308790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1021/1491/files/css_absolute_position.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6903/7974/files/85554843030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3343/6071/files/vupekuxiromaxasat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0727/0312/files/site_handing_over_report.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 3

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_off00005863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5863 5400 bytes
SHA-256: 4d4d5ee82192e4255a88d0f119c328b9a9f02dbd480f80209d8d2c809815c20a
font_01_sfnt_off00006aad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAD 10228 bytes
SHA-256: 0c8d262f4ccb78d7752cd4b8ae3125ecf1a3bcb932c4cb4389969e677ab69dbe

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