Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a609aa119e84d72…

MALICIOUS

PDF

41.0 KB Created: 2020-08-20 07:57:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cc54a88933cbfbf4a48f3d33e7dab9f7 SHA-1: 55df40f5baf250b814705d12b4456f39e4696cc7 SHA-256: 6a609aa119e84d725e888256c601bafc57db23583b0abb6a492a8e9acdca29b5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with one identified as a known malicious redirector. This redirector likely leads to a phishing page or further malware. The document body itself contains obfuscated text and URLs, reinforcing the malicious intent.

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.com/pify?keyword=cetoacidosis+alcoh%25C3%25B3lica+pdf In PDF document text
    • http://files.upinsmokemb.com/uploads/1/3/2/7/132740586/7283876.pdfIn PDF document text
    • http://files.willowfree.ca/uploads/1/3/0/7/130740344/xiwodufa.pdfIn PDF document text
    • http://files.matusnursingreview.com/uploads/1/3/2/6/132682681/4752324.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/1/0430/4578/1665/files/4369726130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8885/5718/files/upsc_prelims_2019_answer_key_ias_parliament.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/blank_dd214_form_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5495/6695/files/annealing_normalizing_quenching_and_tempering.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8548/8543/files/nikufebupivas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5409/4753/files/13242742961.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1217/7572/files/jipalutuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6086/2882/files/37184436112.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_off0000606b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606B 5188 bytes
SHA-256: 8649f4d7cf1ba26c30e137f3b5d907e7ca30e4128e2a3c28ac6c3bd8fdbce57f
font_01_sfnt_off000071c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C8 10908 bytes
SHA-256: a6fd266a0c997ec22829395d191beee0fea0da893f127a5bd14fa9b67ebeb2d3

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