Malicious PDF — malware analysis report

Static analysis result for SHA-256 abf571953b4a1872…

MALICIOUS

PDF

45.9 KB Created: 2020-10-05 13:49:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4d2fc919df7f83f8d11bca3ecfc95d3e SHA-1: 70b4aee8dd4008966ca3b6e2918adb9860797596 SHA-256: abf571953b4a18724d5988230950f414a782b901aec26f51d6c2848fe1b92401
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://ggtraff.ru/strik?keyword=bobbin+head+fishing+report In PDF document text
    • http://files.sapir-forum.org/uploads/1/3/1/4/131483147/kelesupe-gujori-zoguro-neruvasolabu.pdfIn PDF document text
    • http://tugopog.lyndsayrice.com/uploads/1/3/0/7/130740199/be02c418e14ff.pdfIn PDF document text
    • http://files.nationalchristianhousingconference.org/uploads/1/3/0/7/130739684/1064543.pdfIn PDF document text
    • http://files.bklnmanners.com/uploads/1/3/2/6/132681910/pafizarizogatutazenu.pdfIn PDF document text
    • http://files.affaircatering4u.com/uploads/1/3/1/6/131606789/zudatukibiguvupipi.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/1/0493/8658/6274/files/the_new_encyclopedia_of_the_occult_john_michael_greer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6587/9965/files/getting_old_jokes_one_liners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9637/9044/files/botivawibosetejak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/8638/5823/files/maze_runner_actor_hurt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4452/7525/files/continental_run_flat_tires_cost.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9297/4499/files/kenesazoteparaguwosapapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7321/5387/files/xekaregevuvesexogid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6049/3465/files/real_estate_lawyer_salary_texas.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_off00007073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7073 5460 bytes
SHA-256: b9edf49725bcd8d769037f99ecc1f0e2bf26ccb2224d3bf2cc8d3c0a4c4abaa6
font_01_sfnt_off000082ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82FF 12460 bytes
SHA-256: e12d05f6084384b9b6b9872eaf8d26d680d2060b73ff6bf647994b9d99899dc8

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