Malicious PDF — malware analysis report

Static analysis result for SHA-256 11d82a81c7910734…

MALICIOUS

PDF

66.2 KB Created: 2020-08-04 23:51:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8563e4afa7823aadacc539af6595e83f SHA-1: 6a278a0849de5973bd1da0d6a149341eba180a86 SHA-256: 11d82a81c79107344432d329b4c4970307a6c9e31a8bfe31492d622bdaa5d3ec
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=alphabet+anglais+francais+pdf In PDF document text
    • http://files.luxaeternasolar.com/uploads/1/3/1/4/131437778/zewinotur.pdfIn PDF document text
    • http://files.wadokaisouthwest.com/uploads/1/3/1/4/131453684/likalotof.pdfIn PDF document text
    • http://files.georgeinformationaltechnology.com/uploads/1/3/2/7/132712136/nosidine.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6487/6444/files/loledogubowapitudova.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6404/2396/files/beramomimifaropoza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/4757/9811/files/makalah_cacar_air.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8212/8283/files/31061036090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8710/9023/files/29198119041.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2388/3688/files/95311834950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/wajemoxib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4136/4890/files/43016097414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8047/2984/files/business_administration_and_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9063/2092/files/46810004911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/tabawisokobud.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000091d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91D7 5224 bytes
SHA-256: d697cba07240d66cb0fe21b0596886d2db60c8ccd3c035712325c547ca78cb47
font_01_sfnt_off0000a381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA381 17332 bytes
SHA-256: 7fa5d2ed1268a254a6cb651cfe1fc4b9e8dea2c137ff633e36f1346fc12302d3
font_02_sfnt_off0000d806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD806 16116 bytes
SHA-256: 757edbe9ca696dc752e8794cc2fab55b744a24b197aba41abea0c8f583a0f3ca
font_03_sfnt_off0000ece2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE2 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.