Malicious PDF — malware analysis report

Static analysis result for SHA-256 c078fad89da9a19a…

MALICIOUS

PDF

58.9 KB Created: 2020-10-06 12:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 437b66de5ab8afd2f134a4d3b90419e7 SHA-1: b6cf1578aa8c817f5bde24a5424ddbc162295f27 SHA-256: c078fad89da9a19a258ba4d78190258e73a90fda2f11bc61ced10fba817fac0d
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/strik?keyword=uopilot+2.2+download In PDF document text
    • https://site-1039515.mozfiles.com/files/1039515/xujezujuje.pdfIn PDF document text
    • https://site-1039893.mozfiles.com/files/1039893/lokomara.pdfIn PDF document text
    • http://files.mclanesmeats.com/uploads/1/3/1/4/131406075/3209535.pdfIn PDF document text
    • http://files.mattzarley.com/uploads/1/3/2/7/132710638/6947227.pdfIn PDF document text
    • http://files.houstonhomeathensal.com/uploads/1/3/1/4/131406535/zufuradabujel.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/1/0437/5176/8225/files/20848729642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4661/2373/files/1953_cadillac_for_sale_craigslist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1258/3334/files/ccr_born_on_the_bayou_chords_and_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0520/0549/files/lettuce_umbrella_ebay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9925/0081/files/ms_powerpoint_2007_tutorial.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_off00009b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B3D 4924 bytes
SHA-256: c0112697b6622096a45674ca5a4545cf33783b1ac2b5f773bc1754637ab901e9
font_01_sfnt_off0000ac30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC30 15832 bytes
SHA-256: 691209b25962c214de30bcfb5f967d6b4b90221b468cdea566fa97bc60bdfdb0