Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc296a0668a4d6a4…

MALICIOUS

PDF

69.3 KB Created: 2020-10-08 09:26:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 795e910de95afb62b5e97b109592f294 SHA-1: 7c3c4798c342e2e107b1b9831bd1e6a9dba7424d SHA-256: cc296a0668a4d6a49df6e70a35f444734fa16d1a79dc02b0c25e995ea0af4906
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.me/pify?keyword=law+and+order+svu+netflix+uk In PDF document text
    • https://site-1037907.mozfiles.com/files/1037907/ditesumutefogulorubu.pdfIn PDF document text
    • https://site-1037003.mozfiles.com/files/1037003/24526035685.pdfIn PDF document text
    • http://files.mijblaxby.com/uploads/1/3/0/8/130814043/woduvukadek.pdfIn PDF document text
    • http://malomiwe.socoyfc.org/uploads/1/3/0/7/130775545/1503379.pdfIn PDF document text
    • http://files.live-arts.co.uk/uploads/1/3/0/7/130740623/dufuvenezugibuwi.pdfIn PDF document text
    • http://files.onequickchange.com/uploads/1/3/0/8/130813134/xivexanomedur_rugazesavew.pdfIn PDF document text
    • http://rakefu.ecoverthehillgangcarclub.com/uploads/1/3/0/7/130776795/tejabetunin-zetizeme-josib.pdfIn PDF document text
    • http://files.dutchhillfarm.shop/uploads/1/3/1/4/131407102/5370617.pdfIn PDF document text
    • http://visawene.moveovermsa.org/uploads/1/3/1/3/131380213/513c30f.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/1/0478/2581/3663/files/cause_code_98_verizon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7104/4770/files/38494904867.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2659/9064/files/25636074270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0445/5835/files/bupiwixarupanabazejezof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1058/4487/files/97645578474.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_off0000cf81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF81 5128 bytes
SHA-256: a5fd9b09573a7ab33aa30ef2effee162ab70b8bfa0c287934d9764c2e32621ec
font_01_sfnt_off0000e123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE123 11464 bytes
SHA-256: 2965dc2f63c74b6e4bfec4230b1b063b3fe932359952554eaaef1d2c3e5dc748

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