Malicious PDF — malware analysis report

Static analysis result for SHA-256 48a2545789d21d38…

MALICIOUS

PDF

56.2 KB Created: 2020-10-08 03:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 51822f6264609a18cef48f3290dc8989 SHA-1: e2a2dfd69581f3adeafdfc33570f2845d363bbbf SHA-256: 48a2545789d21d384459e278490b5323e13e6299b45b0108fc35897de3c5de78
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://cctraff.ru/pify?keyword=how+much+valence+electrons+does+carbon+have In PDF document text
    • https://site-1039283.mozfiles.com/files/1039283/21042149512.pdfIn PDF document text
    • https://site-1043959.mozfiles.com/files/1043959/95533626114.pdfIn PDF document text
    • https://site-1043686.mozfiles.com/files/1043686/32393967369.pdfIn PDF document text
    • https://site-1039449.mozfiles.com/files/1039449/lirafugav.pdfIn PDF document text
    • http://files.arrigodianin.com/uploads/1/3/0/7/130775748/fesiditavekaz_gabekov_topotum.pdfIn PDF document text
    • http://radekid.huntmyideas.com/uploads/1/3/1/4/131407021/238204.pdfIn PDF document text
    • http://zamosorit.baylissphotography.com/uploads/1/3/1/4/131454012/vovabumixe.pdfIn PDF document text
    • http://bigog.altierilab.org/uploads/1/3/1/4/131407082/8266444.pdfIn PDF document text
    • http://files.teamirelandgolf.com/uploads/1/3/1/4/131438018/1515703.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9116/7905/files/72012410664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8515/2927/files/ritu_singh_ravi_shastri_age.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1758/4283/files/aidan_martin_net_worth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7227/3566/files/persepolis_2_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9508/9561/files/jigenokuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/how_to_fix_a_corrupted_psp_iso_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/7066/8967/files/wezufajetepebige.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_off00009df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF2 5432 bytes
SHA-256: 13d75c9d235f2f0269d5b40353325655c664a51911303a78fe58a2176a3614db
font_01_sfnt_off0000b052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB052 10356 bytes
SHA-256: 1a737aa2e8bf7779d644df8f3207b848470abe3f855ccec272f36009d4d1a4bf

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