Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7c70fdfc434cf5a…

MALICIOUS

PDF

48.7 KB Created: 2020-08-23 01:18:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 679cb20392e90155f320c649f1ce207d SHA-1: 3cc8aeb9671490255d2d578295ca052683e9e091 SHA-256: e7c70fdfc434cf5af7ba462d226d5bbc4666f0f30125e3ff38b7c257e2560f34
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=axial+flow+pump+design+pdf In PDF document text
    • http://files.lamochaboutique.com/uploads/1/3/1/4/131438114/xinalumigaxap-fuletoriwig-juzewesodomose-purivubulaxikux.pdfIn PDF document text
    • http://files.saltedsage.com/uploads/1/3/0/8/130813757/6219150.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/1/0431/9150/0961/files/64903108159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/karezuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1760/7067/files/gusirakiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2515/3698/files/analytical_and_numerical_methods_for_volterra_equations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9733/3668/files/53530298713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6778/5884/files/kirikarabepixarodebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/xidipebumimokujeroliv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/gunuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2129/5003/files/92164527926.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/naa_autograph_mp4_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2874/2298/files/gukolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6386/7552/files/gifemu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6052 5416 bytes
SHA-256: 57a7d2d4c0a5113e9888c874d3c299ec61ebeee0c3b67181126d6b7dc9110339
font_01_sfnt_off000072c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72C8 14820 bytes
SHA-256: d5077dde4f37b8090f2b3df9868de32f7f1bc623bcb4a43f26dd9b9fc123a466
font_02_sfnt_off0000a169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA169 16036 bytes
SHA-256: 9559dd1bd908241551916101fda3d445a26f5c4b506a1423f23393456f9d5940

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