Malicious PDF — malware analysis report

Static analysis result for SHA-256 a18e2509e0eacc32…

MALICIOUS

PDF

55.5 KB Created: 2020-11-06 21:39:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 14d2608f845720f94bff8df98b579711 SHA-1: 6387754495bf73c46cf4a1eedba43cb44a9faa09 SHA-256: a18e2509e0eacc3299ecfb9814ccf80c50814d4565f98f236c8fc3b014658942
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/123?keyword=gender+labeling+definition+psychology PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420222/normal_5f9f29081decb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401540/normal_5fa2fbbcc99f2.pdfIn PDF document text
    • https://kobexozabegubom.weebly.com/uploads/1/3/3/9/133999893/nupur.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/nimemoroligamaj-tafixidupara.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373749/normal_5f91ea66b3526.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383321/normal_5f8c8814305c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376854/normal_5f94880df0c00.pdfIn PDF document text
    • https://lifeweroni.weebly.com/uploads/1/3/4/3/134358493/ec7914ca13f4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413235/normal_5f97451426552.pdfIn PDF document text
    • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/9594994.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e04f5310-b5e7-4bd3-92c7-56fe37708270/poxet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f31268c-1619-433c-9ac5-e3ac77ca7f19/75697925404.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/457abe35-5499-4f74-a116-7734bea031f7/40331488129.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_off000098f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98F4 5692 bytes
SHA-256: 21f2ce14202be410e4bf20c5cd4432e841f004571aebcc09d3384ca4f906c5e7
font_01_sfnt_off0000ac54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC54 10756 bytes
SHA-256: 2905a22b61c63faad6090b31c84050f15004c17846df297732e2170d0bcce726