Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eeea5d0a8477e7e…

MALICIOUS

PDF

40.3 KB Created: 2020-09-14 02:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f5f795ed1c356b10aeef22b49830a7bf SHA-1: 1f33d326ce6f657b65168447a41b4b28e174c489 SHA-256: 6eeea5d0a8477e7ee15aa212f37ece2c60bc79e9e8d28cf50c330ea81df627b8
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.me/pify?keyword=tipos+de+condensadores+pdf In PDF document text
    • http://files.jtowncoffee.com/uploads/1/3/0/7/130775197/rosipewekoziletevibe.pdfIn PDF document text
    • http://files.magicmomentstutoring.com/uploads/1/3/2/8/132814305/buseweke_rumovurezu_zimademilokakuj.pdfIn PDF document text
    • http://files.octreeconsulting.com/uploads/1/3/0/7/130776483/6898513.pdfIn PDF document text
    • http://files.silverrescue.org/uploads/1/3/1/3/131380128/dobafo_tananuxab_tumikub.pdfIn PDF document text
    • http://niniv.thechildrenspiazza.com/uploads/1/3/2/6/132695213/zujisavi-tivovojuv.pdfIn PDF document text
    • http://files.dulichsapalaocai.com/uploads/1/3/1/1/131164531/8637222.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/31593d_40c2024d0c7d448ebb653c46c221fcf5.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8bbd7_09649fbdd95c4d6b99ddf4fedde89bb1.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/e2c250_e8259f879ce34c5fa29028dd8921b9d4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/beauty_and_the_beast_piano_accompaniment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1796/7528/files/fuxataliw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1954/2434/files/66260897641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/47209169107.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_off0000619a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619A 5064 bytes
SHA-256: 1b105aad476f0f722b539032c6e394688338f4eed6c18e7496772d28c2ca3608
font_01_sfnt_off000072e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72E0 10468 bytes
SHA-256: 24eefb1877fc51f6f4221b137aa85e466aea5feae051971ff041a84165b6e247