Malicious PDF — malware analysis report

Static analysis result for SHA-256 543b9a0440ff3be4…

MALICIOUS

PDF

52.7 KB Created: 2020-08-28 12:28:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 314c544fb2c29760cac619ca2b611627 SHA-1: d8893c71423281774e9da09cf1b6a937fb1bcc26 SHA-256: 543b9a0440ff3be465008dedc6a0fe73d1ba0895a5a74ab28fd5a087f5f68958
194 Risk Score

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.club/pify?keyword=microeconomics+perloff+7th+edition+p In PDF document text
    • http://files.orangehistory.org/uploads/1/3/1/3/131380998/6a7d3c8e67aa6.pdfIn PDF document text
    • http://relosewi.kimklabe.com/uploads/1/3/0/9/130969858/5724819.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/1/0429/7064/4631/files/reduce_resolution_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6351/7092/files/79108553513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3266/6524/files/gps_time_converter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6863/6834/files/81111527363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8264/5665/files/endometritis_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4791/1329/files/atomos_ninja_flame_recording_formats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/ximulinerogapawex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9730/0899/files/10160706045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/network_crimping_colour_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65069223210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3266/6524/files/arbor_buzzard_ffxiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6863/7862/files/tadopam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4367/6582/files/flat_earth_map.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_off00009076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9076 5272 bytes
SHA-256: 27cdadc3ce6a2792221cfe6b2e46470469a4ad2a8ecb7ff827d468cc32adb36c
font_01_sfnt_off0000a241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA241 10292 bytes
SHA-256: 675ca73474e2f21fefeb77fe9d43fcdae14d7f2ddf11c35d02963996c85f584a

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