Malicious PDF — malware analysis report

Static analysis result for SHA-256 054654d2a63c7549…

MALICIOUS

PDF

48.9 KB Created: 2020-10-27 10:59:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 47e131180d7f8ff0471050df3b0fd86e SHA-1: 8960a4324a9c15d753d8272ed86c51a12c110cdf SHA-256: 054654d2a63c75499f435e836ea7a93fb6e5b326ab11fccb0ee72439c1aed2a9
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.link/123?keyword=wickes+furniture+coupon In PDF document text
    • https://godadonalizubo.weebly.com/uploads/1/3/1/4/131437317/joxovezexem-waxegusomukefa.pdfIn PDF document text
    • https://puwevifu.weebly.com/uploads/1/3/4/4/134465284/9595277.pdfIn PDF document text
    • https://zoseruvabu.weebly.com/uploads/1/3/4/4/134492528/8165859.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/2105481.pdfIn PDF document text
    • https://sizukejagu.weebly.com/uploads/1/3/2/6/132681884/vojet-tagejefot-kirup-xebuti.pdfIn PDF document text
    • https://seranogi.weebly.com/uploads/1/3/4/2/134265977/4732606.pdfIn PDF document text
    • https://wabozejitikaz.weebly.com/uploads/1/3/4/4/134495441/cc719.pdfIn PDF document text
    • https://josugonu.weebly.com/uploads/1/3/4/4/134488469/ginuxuxewa.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000734b.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000734b.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a895.bin)
    • https://s3.amazonaws.com/subud/3717831453.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/zivupusu.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/gomirinebomid.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/bisaya_story_with_picture.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/18872941876.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/76312411203.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/71064594209.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/13066325232.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/dojeb.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/augusto_cury_armadilhas_da_mente.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 extracted file (font_00_sfnt_off0000734b.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000734b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734B 4724 bytes
SHA-256: c34ebde0c1efc60973baf697d25c9ab2f1ef9db3486bbfdfe387aec10a10d21a
font_01_sfnt_off00008375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8375 10912 bytes
SHA-256: f295a6a32602c66fbe9d94d28238870249baf5b6f98995f4f134df062e46eac5
font_02_sfnt_off0000a895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA895 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c