Malicious PDF — malware analysis report

Static analysis result for SHA-256 52ceb1f2c1eae4ef…

MALICIOUS

PDF

43.7 KB Created: 2020-10-04 07:34:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: bcf6ea511a30c1044ed8f024dc1c7f12 SHA-1: de9f05be664053a512090405103004dd35acfcd6 SHA-256: 52ceb1f2c1eae4ef765982793d184b3441ea68c1f6099fe0ecb412cd066e8240
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=poder+apud+acta+modelo In PDF document text
    • http://xoviwo.realhopeoswego.org/uploads/1/3/0/7/130740178/3406864.pdfIn PDF document text
    • http://woxafizi.fightnightblog.com/uploads/1/3/1/4/131407080/9391060.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/0b853cc0-7fb1-497e-b004-b70cec31a058/64793000614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1f327fc-cb0d-4240-97e9-168492632c02/daxogoxiboduf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae12f9c1-b7e7-4684-8cfe-51a29c73724b/vodomerolixezigav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c04d50e3-185e-489f-a1c0-f869a0f7c1e2/75436322498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2754/5763/files/maxafiwikaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2160/6818/files/xevanaselonutikovisam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0302/7361/files/non_verified_drivers_license_ct.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8794/8693/files/1830258620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/1896/3109/files/chasing_lincolns_killer_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/0670/0963/files/maplestory_gunslinger_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0558/1211/files/goodnight_moon_by_margaret_wise_brown.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0233/1811/files/realtek_digital_output_not_plugged_in_msi.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DBA 5040 bytes
SHA-256: 338aa5b98dbaf2e5a94900dfe91ae2f8164c2048b1f144adfa71329cb9e3edd1
font_01_sfnt_off00007ec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EC7 10796 bytes
SHA-256: daf0ef1d6665b9b708dfd06ecaa10abfce329b956f1a3f859710ede36a7a750a

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