Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f2d4b7118fac1fa…

MALICIOUS

PDF

41.8 KB Created: 2020-08-02 00:44:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 574907e1ad8c0dd59a99de650fee5251 SHA-1: 67d6a2a41e576dac01b6dc4c51fc33c657e510cc SHA-256: 2f2d4b7118fac1fa1e8d2baee636e6030c6247eb6a470d1297d2827a9afaf164
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.com/pify?keyword=ups+time+in+transit In PDF document text
    • http://files.zockolluniversity.com/uploads/1/3/0/8/130874413/4136158.pdfIn PDF document text
    • http://files.greyallison.com/uploads/1/3/2/6/132695755/893968.pdfIn PDF document text
    • http://files.cassandradenhartog.com/uploads/1/3/1/0/131071072/vuzit.pdfIn PDF document text
    • http://files.demornewarrenddub.com/uploads/1/3/1/4/131409170/dakodup-simegi.pdfIn PDF document text
    • http://files.msgreenoughsvirtualguidanceoffice.ca/uploads/1/3/0/7/130738619/6724997.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/1/0435/5103/1447/files/66880026955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/minobifofigupod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5181/8903/files/78670466243.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3495/0304/files/82379717625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2297/files/67598846339.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/sugazojatijixewanem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/jemazowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6507/4086/files/291893813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6163/2406/files/megarokizebovifuvisib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3685/1874/files/37587712540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4701/files/83147244364.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6816 4924 bytes
SHA-256: 3aaa2becce64a7943737de9c5f2a874a3fcd2f98ac1e8752dd51eb235880a656
font_01_sfnt_off000078bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78BD 9852 bytes
SHA-256: ad3a3f08627449e999a4099f8c3625a3095a79ec2e6581b84ca70e23d73bc8ba

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