Malicious PDF — malware analysis report

Static analysis result for SHA-256 93e2a0cd4d9e6073…

MALICIOUS

PDF

50.4 KB Created: 2020-10-08 01:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 2e74a61571a09271e4b0624c47623865 SHA-1: 6b98f29563405bbfdacb181d2395f8d2cb659f2e SHA-256: 93e2a0cd4d9e6073a4f7e2aab0e3a48673826ae3f5c179baaba6ca909fd4af8b
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=enthalpy+change+calculator In PDF document text
    • http://vasaj.christophermtorresphd.com/uploads/1/3/2/6/132695601/be08ab32538012d.pdfIn PDF document text
    • http://vanasim.nativitybruins.org/uploads/1/3/1/4/131438416/130646.pdfIn PDF document text
    • http://files.jstello.com/uploads/1/3/1/3/131379253/0238de7bb.pdfIn PDF document text
    • http://files.artinthevillage.co.uk/uploads/1/3/1/1/131164125/moxukasexulerexoged.pdfIn PDF document text
    • http://files.helenadevaney.com/uploads/1/3/0/9/130969776/9aaa9.pdfIn PDF document text
    • https://site-1042270.mozfiles.com/files/1042270/1015035934.pdfIn PDF document text
    • https://site-1043088.mozfiles.com/files/1043088/papekunaruwajilovava.pdfIn PDF document text
    • https://site-1039970.mozfiles.com/files/1039970/dojegedodave.pdfIn PDF document text
    • https://site-1039740.mozfiles.com/files/1039740/4502122387.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/1/0431/5332/6242/files/the_practice_of_statistics_5th_edition_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4371/7274/files/49872538060.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9832/3609/files/fevunegupivo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3114/8197/files/48817479233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1137/4230/files/usa_vs_ecuador.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_off00007438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7438 5076 bytes
SHA-256: 40b2e737bc82d4cd9c3732127482e9e7f752069063a3fe3d9536820778498687
font_01_sfnt_off00008582.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8582 10008 bytes
SHA-256: c227f2042e62b9b971603c6309459f54c00c66ee63bb5b504714f8fbbacfdd20
font_02_sfnt_off0000a7d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D7 16076 bytes
SHA-256: c6e5a50beeb96386e46c13b851249bedf13903b0e4c64ff4170c933eeab0380e

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