Malicious PDF — malware analysis report

Static analysis result for SHA-256 e30e08abf2deed45…

MALICIOUS

PDF

72.2 KB Created: 2020-12-08 05:20:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: c7e573ebed435fc45e1557ad80b24cf3 SHA-1: 16a4bf12c0e707de84afb56f04acc8caa0942ecd SHA-256: e30e08abf2deed453d15c9f62c3744196b3e825b4e0abe101c504d3cb7c89d16
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://trafffi.ru/square?utm_term=civil+war+photos+then+and+now PDF link annotation
    • https://jumozavuna.weebly.com/uploads/1/3/4/5/134598597/gijokinitodoli-rosijugiruge-xixid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f87198db5ef7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377905/normal_5f95b929bcdb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407057/normal_5fa6d52a957ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469104/normal_5fc49b478e8e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f880b5047a8e.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xeweregatazorexafenu.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/40e6cb58-cbcb-4bf3-b0b5-3fc6dc2a3e2f/diwifaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95f115b0-0483-4d67-aa2c-942be7290bac/bagufegaximakusunazimof.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5475712facd59cec9dbbd/t/5fcbdffe1ef6d1662ffbafae/1607196670650/toca_kitchen_2_free_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc377939955c744b54bcd16/t/5fcdb4c30ab5d62feb10ffb0/1607316677197/40225858068.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9522d8d5-8d67-4975-9d78-f76b2a297a76/busudedofufivitoxuxudit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4844217c-bd04-4acf-8daa-9cc48ef77ae2/xemizabaduvawirowedumibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91576f86-6fc5-4099-b12c-facb92a0558b/19683197940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9b52d05-d773-4f36-9c48-f50bb8970465/proform_520x_treadmill_belt_slipping.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_off0000dff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFF1 5104 bytes
SHA-256: 55aee139a7ffba9073e49b67c8e70797db0bcbdb6fb382e2d28f2d465c1c27f2
font_01_sfnt_off0000f151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF151 10132 bytes
SHA-256: 2a151a9bfaec7c0b05fe4d74af240c9d9a7709fd9165ab24511bfcd537d42a05

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