Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cff01fa8046933f…

MALICIOUS

PDF

68.1 KB Created: 2021-02-11 16:44:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 595c0e6016d12b13822ced0f50c0e210 SHA-1: 5c921c579aebd8d3456ca0fa09abb5dd3e43b620 SHA-256: 2cff01fa8046933f18bd57ad1bb744fd72add8ddab7ac412e41012018e7cc911
196 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
  • 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://maypoin.ru/wix?keyword=palisade+guardian+3+unblocked PDF link annotation
    • http://denizan.com/pisenebixuzesufubawagasspyr.pdfIn PDF document text
    • https://forerijekakifur.weebly.com/uploads/1/3/5/4/135401119/xexapamusavelujid.pdfIn PDF document text
    • http://gatorama.fun/top_alternative_songs_2010_billboard1enb7.pdfIn PDF document text
    • https://kuginipa.weebly.com/uploads/1/3/4/8/134853520/zunuzanozinifa_viwuxikiluweb_falovetabam.pdfIn PDF document text
    • http://pshcomonhere.xyz/tegarifugenovizejoxiniwal6o3e.pdfIn PDF document text
    • https://xigolomo.weebly.com/uploads/1/3/4/4/134483438/6194156.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/lekezaru/platform_toolset_v140_not_installed.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/hello_love_goodbye_full_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/80534702753.pdfIn PDF document text
    • http://tipixerokofor.epizy.com/amleto_copione.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/rcog_green_top_guidelines_diabetes_in_pregnancy.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/pitir.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/87674610531.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/18940581417.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC110 5280 bytes
SHA-256: 902e5b1694ce7530f0f5498a1b2e7d2d9450cb0b303ff2e4de233bd429167b1c
font_01_sfnt_off0000d2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FC 10148 bytes
SHA-256: cfd370a3ae0fb0c34cea0e1f36d1ff8b90bcb40294c1762e92d3cbc302f3b8ba
font_02_sfnt_off0000f56c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF56C 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e