Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfb876a06b4af925…

MALICIOUS

PDF

49.6 KB Created: 2020-10-16 07:10:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 785121e2e81aa8c2e215f90b9958dc25 SHA-1: fe13c5c388f1dd62155b4139b428a61e9ec4acd1 SHA-256: cfb876a06b4af925cb2ef736067bd4b30358b109c92670b58c66e7778c69c2bc
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/pify?keyword=resisting+the+boss+pdf In PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bf4458.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/ef82e0d.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/lanadez.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/9876145.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/2974111.pdfIn PDF document text
    • https://vawotitalu.weebly.com/uploads/1/3/2/7/132710714/kimefurimako.pdfIn PDF document text
    • https://buluzuzumaz.weebly.com/uploads/1/3/1/6/131636727/7878292.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/navogevifib.pdfIn PDF document text
    • https://wefejakero.weebly.com/uploads/1/3/0/8/130814310/8145293.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8c3f11ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369328/normal_5f88a14730fa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371791/normal_5f88db4c3c05e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ce7db0e-84fb-4200-970a-252c78c1a3ae/96972881850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78229c5a-6261-4799-8822-a5fb13ef9cda/4051923578.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ca2b079-8444-4883-a241-785260512af4/sinabitomifusafopedujez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/3722/4860/files/patok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/capital_one_subpoena_compliance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8217/8979/files/78954943419.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9407/2214/files/princess_diana_haircut_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7230/2503/files/20024572400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5269/9300/files/digoliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/9836/7130/files/oscar_and_the_lady_in_pink_letter_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/0721/2190/files/56825997327.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7220 5112 bytes
SHA-256: 6ca2ed08ab60a9d08efb7db6e1705a61a28117497749562e442860ad0a4a86a1
font_01_sfnt_off00008373.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8373 4552 bytes
SHA-256: 6f57913b8aebdb6876981836de4ca33ae5ce45c84914876112e09a760ec52230
font_02_sfnt_off000093b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93B3 10700 bytes
SHA-256: 5b7ee7ca1d95e9e540bf7e89a4b217f009a6ea98c87e8a83dbeeb08d89fa87a2

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