Malicious PDF — malware analysis report

Static analysis result for SHA-256 3abc96f33c572f74…

MALICIOUS

PDF

43.1 KB Created: 2020-11-07 02:32:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 41d02664770b2b6b02ff8418c27d27a7 SHA-1: df1eb2e2feafa2eeb13af44734d5aaeae13785ed SHA-256: 3abc96f33c572f74a007171c8c88cd577f2f45bdd4cf8fa534ff5d5f9d74eea3
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://cctraff.ru/123?keyword=gta+v+freemode+challenge In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kuboki/1_cup_coffee_maker_walmart.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/kinetic_potential_energy_worksheet_w_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/76811660408.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1488a0d-b930-438b-834b-0d703c15ddbc/pikukosigonugewipuzal.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/kubaxaluwosujavabozawok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9edccfa9-3d13-43c9-b03b-8ffbea99a78d/maus_my_father_bleeds_history_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/ikea_gronlid_chaise_sofa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fea2eaa-bff9-4e58-ad0a-1010db5f5f94/netaxamudedodonudo.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/my_state_history_com_louisiana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e65ca1f-919d-41d3-8367-0d78b98545c3/google_chrome_apk_downloader_extension.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/27309834712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3864ffcd-596d-48c1-b293-22afb3215cec/duselek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67147844-fb72-4561-898e-d577b58f2e32/ziwudifarosuwik.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/george_foreman_roaster_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32c3e09d-d522-4db2-ac86-be8e2232dc49/xoretewetotujutup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6045b118-996a-4301-99f4-b3ef88b19bb1/jojurizelokasatibub.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_off0000691d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x691D 5348 bytes
SHA-256: 0e48d579c9f5f8717ce1d02870916865a52af1df4f83a98cffd0874536f438e9
font_01_sfnt_off00007b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B33 10704 bytes
SHA-256: e008b33bfbac31b195ad9a2bf8aaee81928f7df70d68e5e5ba0da6be5a0c8a7b

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