Malicious PDF — malware analysis report

Static analysis result for SHA-256 d49765dd3fe3bad1…

MALICIOUS

PDF

37.0 KB Created: 2020-10-28 18:11:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 7ab384caa699b1618f595e8d0b3b303d SHA-1: 9583109442738c24e17861a21aae4b8819438dbe SHA-256: d49765dd3fe3bad1c0f401eb61b22b271035a02ce55be8c8415b364a86ce7452
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.link/pify?keyword=escape+from+tarkov+free+key In PDF document text
    • https://cdn-cms.f-static.net/uploads/4377388/normal_5f8a98ce1a2a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401692/normal_5f9890d5cb863.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370317/normal_5f88475f9d51e.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/sixukejomiwewanage.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369514/normal_5f8e62d7616dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00004351.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00004351.bin)
    • https://cdn.shopify.com/s/files/1/0499/3253/3922/files/xowojuwafelujunujodifupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4993/4229/files/deterrent_theory_of_punishment_in_india.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4548/5725/files/71255781238.pdfIn PDF document text
    • https://s3.amazonaws.com/jeduzizonox/92996239962.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/cbse_class_9_english_literature_reader_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/77132347505.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/comment_fusionner_plusieurs_en_1.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/zotexu.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/push_and_pull_system_in_supply_chain_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4387/1643/files/chapter_13_study_guide_answers_physical_science.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8289/0918/files/54602161682.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/negamobesefimojev.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 extracted file (font_00_sfnt_off00004351.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off000071be.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off000071be.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4351 5312 bytes
SHA-256: 4b36872c9c44b0651ae2a5d4eb495c2f9a8c8321222fa07af9278abf8f0a4830
font_01_sfnt_off0000556a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x556A 8396 bytes
SHA-256: 7c3abbc1805daf5f7e37d7653398c52ffac51fccf1a7ffb706b8040d05b6dc7e
font_02_sfnt_off000071be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71BE 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15