Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aaf8cc2fc42f61d…

MALICIOUS

PDF

71.2 KB Created: 2020-10-17 05:57:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1596f2ea680f3805cbe3b09dbca0b2c8 SHA-1: e7a705dcdd39a432776276bb1f66917c6b46641a SHA-256: 7aaf8cc2fc42f61d921a07b2a9dd4ef29c39dd1d9f5a4e8f751cdd149acaa051
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://cctraff.ru/strik?keyword=in+a+file+processing+system%252C+each+de In PDF document text
    • https://cdn-cms.f-static.net/uploads/4378383/normal_5f8a252ec32d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_5f88bcd8a9e36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5f8726e27d961.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376101/normal_5f8a09d221280.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368246/normal_5f887a4e9d49c.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/1/0501/5673/2581/files/noma_snowblower_parts.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5343/9912/files/fuziri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3057/9869/files/54534271089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6626/1141/files/97175315087.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3952/1450/files/fepowidometaluxemibepamun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7086/8644/files/25009383488.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2644/6498/files/65366625548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9240/1558/files/sasekega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3485/5582/files/george_lopez_tv_show.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/8113/7821/files/48652987683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/7264/2972/files/winter_slip_on_shoes_womens.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3ae784d-901e-4bb2-903e-4581789dda85/gupepewobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/375f8cf2-bf61-4fb3-9a95-0b191705b05a/gugopoduzakagoneminale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4736a046-1efe-4cf1-ab34-4ae1ad729b5d/tinedomifujajutokito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7698f7b7-7ddb-46da-9345-00665ec5ff76/53139145261.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29e3b682-4d37-4bee-8739-d81238d72a80/37057606639.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3324dc74-ce12-43ac-9e03-4fdf04158afe/73103795198.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_off0000d3a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A0 5664 bytes
SHA-256: 54bd297811070fc9f937a5a98db5dbbd5fcc2223327ff3955edab6d8fb5b2f51
font_01_sfnt_off0000e6c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C5 12544 bytes
SHA-256: ea0ae0c5511be1aabade7abdceae44766fc7717b0cd39e0b56fcea4d57b72ea9

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