Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae9d0bfa824b7ee…

MALICIOUS

PDF

47.5 KB Created: 2020-10-26 03:39:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: a3248fac451ebafe07daa23124b77af3 SHA-1: 3f8dfb462ee2587b4e8700014485e39698ce38d2 SHA-256: fae9d0bfa824b7ee490f633f05ca987acc01acdb8e5332a5425c79b863f62cd2
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.me/123?keyword=essay+culture+of+pakistan+pdf In PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/1734890.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5f895faaa6dc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384308/normal_5f93ede64b2d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383136/normal_5f8c678bebd9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f8aeeb917fc9.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006d06.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006d06.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000a253.bin)
    • https://s3.amazonaws.com/wonoti/zunodinozag.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/21491047862.pdfIn PDF document text
    • https://s3.amazonaws.com/lixasifasi/worthy_of_it_all_chords_g.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9151/6310/files/asus_p5q_deluxe_uefi_bios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0878/9150/files/metasploit_tutorial_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/7841/6037/files/avg_antivirus_free_for_android_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4447/8362/files/jeposopiwije.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80252fdf-8b9b-4df9-bbfa-13d087fd2637/lakudokabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cfae0d5-b102-422d-8780-0cd7b6a2a2a5/xegikejedan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b985cabc-f3ef-46f8-869e-d2eef83cd1e4/62352969534.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f202904-47d8-4ceb-a82b-4d0aa8857185/15519404930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5378/8569/files/osn_movies_first_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9679/1456/files/howard_gardner_multiple_intelligences_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/2876/6630/files/jigixis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2439/8528/files/tommy_hilfiger_ladies_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1609/3335/files/prizefighter_mod_apk_android_1.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_off00006d06.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D06 5152 bytes
SHA-256: 1c0b9d75ea4f558ba542c39d9ca8a36fb34c63bd2de15e722d53feccd091c64a
font_01_sfnt_off00007e9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E9F 10548 bytes
SHA-256: 817fb416e1883dc633148f31714c441cb7d795c015a63110944fb0e6f11d1927
font_02_sfnt_off0000a253.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA253 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f