Malicious PDF — malware analysis report

Static analysis result for SHA-256 da9917946bd378d2…

MALICIOUS

PDF

40.4 KB Created: 2020-08-20 21:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b147df4b84b1822075c04a181fc0830 SHA-1: 0ee9fca4aa7b69033d63b708e6af3557b89ac287 SHA-256: da9917946bd378d2bdd884f9b6a3bc9924a92391e00b4a7c04bfa7646e70de7a
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 document body, though heavily obfuscated, contains text related to an online registration form and a URL that matches the malicious redirector. The presence of a 'download button' heuristic further supports the lure mechanism. The primary malicious IOC is the redirector URL, which likely leads to further stages of the attack.

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.cc/pify?keyword=online+registration+form+of+uos In PDF document text
    • http://jetoma.theartofhump.com/uploads/1/3/0/7/130775045/wonikinejuxune-benukaliv.pdfIn PDF document text
    • http://files.livinggodsmission.com/uploads/1/3/0/8/130874413/femobupowufebekoluta.pdfIn PDF document text
    • http://files.floridaufonetwork.com/uploads/1/3/1/4/131438067/malukik_babisutarit_nezipij.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/1/0438/9791/3512/files/39626319567.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7353/6161/files/51772783753.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/vmware_nsx_manager_installation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9442/3192/files/19273701369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6133/8531/files/siferelozowip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7437/1235/files/xamagejow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/wotoritu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9671/6952/files/86346857186.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7183/6055/files/alchemist_book_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4361/7959/files/94029822560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3563/1514/files/55941637870.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6517/2387/files/46662512573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6869/3407/files/79550702548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3262/5831/files/xakafujawesenatubid.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 8

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_off00006201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6201 5112 bytes
SHA-256: a38cdb66512f09893a8210e899d9d653ff5e148851e641505b1e7f94c1ef8a7f
font_01_sfnt_off00007354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7354 9816 bytes
SHA-256: 41482e9703a463b46ba2eb7370654d19f8b12d3efc78ed753aaf2f2c8a3f4c7a

Open this report in the interactive analyzer, or submit your own file for analysis.