Malicious PDF — malware analysis report

Static analysis result for SHA-256 274b4886e37faf4e…

MALICIOUS

PDF

51.1 KB Created: 2020-10-29 01:13:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 02afc51d8360113b44c71a61c328a6d9 SHA-1: fb65635c6c11603ae2308121129e1703aacef221 SHA-256: 274b4886e37faf4ef4c028ebdc5a5a02a8e7159b4033b21117803b5ae86158d9
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://ttraff.com/pify?keyword=points+lines+and+planes+worksheet+answer+key In PDF document text
    • https://feloxoxux.weebly.com/uploads/1/3/4/0/134000485/085e6ca336f5ff4.pdfIn PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/biresole_kifovidijoxez_lonisogewofi.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/5468668.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/viwibutesu.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/bigunurusipota_vovavubavuw_malolipesafa.pdfIn PDF document text
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/pexejizerupox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5f97a5cbb6309.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369166/normal_5f8e17f4391a4.pdfIn PDF document text
    • https://zekasujiminog.weebly.com/uploads/1/3/4/3/134366003/962937.pdfIn PDF document text
    • https://mojenosude.weebly.com/uploads/1/3/1/3/131382274/10fa04ae7cc47.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wusone/47270584960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9087/9667/files/varietas_cabai_rawit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0775/1838/files/girlfriends_guide_to_divorce_online.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/dekedawakolupilifulenik.pdfIn PDF document text
    • https://s3.amazonaws.com/vetamedisoz/losikokavubuxuwowuvubona.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/mechanism_of_biological_nitrogen_fixation.pdfIn PDF document text
    • https://s3.amazonaws.com/xenavuxa/cavidades_corporales_anatomia.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_off00008a1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A1B 5308 bytes
SHA-256: 0d10e94b3a63ef0ade1826ac283e62445725dce6483f544b89807ed21ade126c
font_01_sfnt_off00009c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C36 10160 bytes
SHA-256: c75c3239c29753e978e2676f419912b2e0758d44a782785cf8316c63832b3a23

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