Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6c737307b6f0c8f…

MALICIOUS

PDF

50.9 KB Created: 2020-08-08 19:13:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38edcdc5c7b4d89576e7462d3b0d68e5 SHA-1: 26eee882ab1e687930e3d1365db7027a66223ae6 SHA-256: a6c737307b6f0c8f441d2359786278af5e4b4b0e41553755197cb4ae1c09795b
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious infrastructure, indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, suggesting the primary intent is to trick the user into visiting this site.

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=pengertian+behavioristik+pdf In PDF document text
    • http://files.maltbyhilltop.com/uploads/1/3/1/4/131453633/248cab.pdfIn PDF document text
    • http://files.prowashmyrtlebeach.com/uploads/1/3/0/8/130874526/c7a22.pdfIn PDF document text
    • http://files.nspl.info/uploads/1/3/0/7/130776478/tosibetumudaz.pdfIn PDF document text
    • http://files.ladybugliteracy.com/uploads/1/3/1/0/131070688/a86706.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/1/0432/0234/7168/files/msxml_4._0_sp3_parser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4247/1064/files/lizizusikewesi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3197/0460/files/30809516581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0595/8565/files/lipowajafef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/python_convert_char_to_ascii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9801/3863/files/toxina_botulinica_estrabismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3902/2494/files/environmental_effects_of_air_pollution.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0258/3449/files/adding_and_subtracting_negative_numbers_worksheet_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8857/6673/files/brother_dcp_l2540dw_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4048/9122/files/2832636959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/92270717261.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_off000089f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F2 5536 bytes
SHA-256: b958dbd21da6e98d2c85852a9baa0f86247d211af74595b377711b8217e71270
font_01_sfnt_off00009cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CC3 9852 bytes
SHA-256: c44229ad9660ad1e529cc4ba4f53bb86365c29af68894002f61e8f9bcf493e85

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