Malicious PDF — malware analysis report

Static analysis result for SHA-256 59dfaee010176336…

MALICIOUS

PDF

42.6 KB Created: 2020-10-25 06:48:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 423eaf7b3abd54339845687cd7fdfdf5 SHA-1: 6f97470f979b9161431d0438e8bc1f104cd4600c SHA-256: 59dfaee0101763367ef36f8d82aa157e4fab35ba1675f97d973035da56c4d4dc
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/pify?keyword=idle+prison+tycoon+mod+apk+1.1.2 In PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/jadurudivifon.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/a0cb48.pdfIn PDF document text
    • https://rovumixonisi.weebly.com/uploads/1/3/4/0/134012407/pilezubaxakuro_giwavavabem_vupusuximikudum.pdfIn PDF document text
    • https://debemalimuwu.weebly.com/uploads/1/3/4/3/134385929/4060155.pdfIn PDF document text
    • https://xilorufanil.weebly.com/uploads/1/3/0/7/130739938/widef-xilajuzet-wisogafit.pdfIn PDF document text
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/latufoxurem.pdfIn PDF document text
    • https://xekixudag.weebly.com/uploads/1/3/4/3/134336078/c60a09874.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/5802a14c0a75.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/zawazitoxiwibusak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368230/normal_5f8974897e943.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384039/normal_5f8c953f4d2bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f8afac263fe8.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000067bd.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000067bd.bin)
    • https://cdn.shopify.com/s/files/1/0431/5598/0450/files/66936956734.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0506/5732/9302/files/ikea_pax_drawer_assembly_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5697/1432/files/18983379704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2889/8211/files/xiwedifufoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1247/1962/files/difference_between_reciprocating_and_rotary_compressor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5172/7030/files/sociologia_urbana_e_rurale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4489/5392/files/21473450163.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5435/1015/files/ligoga.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/subordinating_conjunctions_worksheet_7th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/introduo_a_epidemiologia_livro.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/24085569856.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/tupafome.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/jawawul.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_off000067bd.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67BD 5536 bytes
SHA-256: b8b2598080795c6c107f87f9dc0577bd072402bd9effa669ae2a7c0d3843db96
font_01_sfnt_off00007a8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8C 9964 bytes
SHA-256: f6737787a26fb20af842440cce4ef7e791bc937c41c0d5754fbf0b3572a0ec52