Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d7a1920379274a9…

MALICIOUS

PDF

65.8 KB Created: 2021-02-08 18:23:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c3b758680e242a7dd62beb4ab7a002b8 SHA-1: 8528f86bd124240a6861c7590774bfb374faddad SHA-256: 0d7a1920379274a94a92fa8c3c21bddb530edb95137daf5dcf464708f124e6a0
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://crophysi.ru/wb?keyword=split%20pdf%20into%20pages%20acrobat In PDF document text
    • https://static.s123-cdn-static.com/uploads/4490515/normal_5ffadadc7c594.pdfIn PDF document text
    • https://xirovule.weebly.com/uploads/1/3/4/7/134749068/2707516.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416322/normal_5ff098fe7c797.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393644/normal_60123600bcd63.pdfIn PDF document text
    • https://cdn.sqhk.co/lezagononek/chbhhzk/dazututulojalusedejifewi.pdfIn PDF document text
    • https://lafadulow.weebly.com/uploads/1/3/4/5/134591129/ruxelato.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377102/normal_5fca37c842390.pdfIn PDF document text
    • https://dalideno.weebly.com/uploads/1/3/5/3/135384103/dfc5d54.pdfIn PDF document text
    • http://nuwefug.22web.org/72095075574.pdfIn PDF document text
    • https://gejiraje.weebly.com/uploads/1/3/2/7/132740564/tiwapumitojimevonar.pdfIn PDF document text
    • http://ridegibulas.22web.org/2019_tamil_movies_video_songs_isaimini._com.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453754/normal_5fc5cdb49a354.pdfIn PDF document text
    • https://livadekawa.weebly.com/uploads/1/3/5/3/135317457/zopovugebizekal-vezoravivife.pdfIn PDF document text
    • https://masodorenos.weebly.com/uploads/1/3/0/9/130969057/3c2bd4def8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bipedok.epizy.com/lakshmi_narasimha_naa_songs_free.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_off0000c374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC374 5568 bytes
SHA-256: 42a89f7901737ad3db4feb1f692409035a9507381b17100a0700407ce48c072f
font_01_sfnt_off0000d672.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD672 10664 bytes
SHA-256: 6bbfd27dd8a81bddf930371f15fbf639f623a17f2100deaedbe5336fdeefb745

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