Malicious PDF — malware analysis report

Static analysis result for SHA-256 e505ab31d342963c…

MALICIOUS

PDF

51.5 KB Created: 2020-10-24 04:46:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: 00cdd316164a988b9851dba3107ea24b SHA-1: cd32d790d5f676f5a4307a4159e1c2df4f18c0f1 SHA-256: e505ab31d342963cad731c8f5c6188f23d9153ac6942df5b18c50158d215e66f
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/aws?keyword=understanding+human+body+language+pdf In PDF document text
    • https://kuvofexe.weebly.com/uploads/1/3/1/1/131163751/1544317.pdfIn PDF document text
    • https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/dujogibaw-xovozakarup.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/4791618.pdfIn PDF document text
    • https://genamimiwovem.weebly.com/uploads/1/3/1/6/131636881/7821e6.pdfIn PDF document text
    • https://zosupexaduj.weebly.com/uploads/1/3/0/7/130738593/5612644.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wuniku/athlean_x_program_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/bin_sachivalay_exam_syllabus.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/most_common_english_words_with_arabic_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/como_hacer_referencias_apa_para.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c3a6da2-dfc7-4222-a301-7f4c072bb905/nafigojuzeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3227/5865/files/walemadif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1688/6678/files/download_game_cooking_fever_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0da5930-b3a1-474b-946e-9c3b32967b92/gadunazipalixuxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c793a540-472d-4f8e-8352-45ce67a1fac9/56591517341.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cc04152-a542-4d84-ab4e-2377b98adccb/supatirusewufebosakavoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f22856ee-4f94-4423-9687-6357dd625777/98046821886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4389798-d03f-4a57-b486-fc596c90d7de/10264317500.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0C 5568 bytes
SHA-256: 47edbdeec773d33f5ee5ab76c9810f12e9fa4251091f3a364cc75acde1b126ac
font_01_sfnt_off000090c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90C9 9996 bytes
SHA-256: ff7f4e8e91396b943ae03db621734392d3f1835fae62ec1fa4284b2152bc6989
font_02_sfnt_off0000b2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2D8 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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