Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e02195f43a47078…

MALICIOUS

PDF

40.1 KB Created: 2020-08-18 16:00:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 38f36002dae840c81020a967e466526e SHA-1: 355b04fc2b9f78aa88361dc064ea1fc2f0abde64 SHA-256: 7e02195f43a47078e0a2e3e8c9cba9467a2b0e7a3eb9c1d8d31604f5ecbf7753
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=flamenco+guitar+basic+techniques+pdf In PDF document text
    • http://pobula.beautifulmuscle.com/uploads/1/3/2/8/132814084/192611b921.pdfIn PDF document text
    • http://files.johnmfraser.com/uploads/1/3/0/7/130776891/a4116cb9859.pdfIn PDF document text
    • http://files.focusbiblecollege.org/uploads/1/3/0/8/130873735/d76cc518fffebe5.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/1/0435/5850/2563/files/cutnell_and_johnson_physics_10th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2486/5685/files/age_of_greenland_ice_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4417/5013/files/isometric_paper_a4_printable.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2793/1029/files/41862613232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5407/9904/files/rakuguwuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2013/2257/files/mubemiramo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/70914876807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4170/2567/files/35867424649.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_off00005df3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF3 5788 bytes
SHA-256: 317a64626e572156ebb9270dced2d9c2c1abf66c8a2354db644785d3a0f37572
font_01_sfnt_off0000716f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x716F 10088 bytes
SHA-256: 01a9dce1c752b0e7cacddc7b645526ee0a88df6636ed0641af9e670c60654bc9