Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5ddf8020c88da98…

MALICIOUS

PDF

54.4 KB Created: 2020-10-07 14:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 934f855012aad1080f63df771bc3efbd SHA-1: 698961ba1ad6ebd545c141768bf55c5c6db5778d SHA-256: c5ddf8020c88da98633ee00bcfb78138a6de8701ab82fb03c6183b4870379bf1
132 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/strik?keyword=the+maze+runner+1+full+movie+download+in+hindi+480p In PDF document text
    • https://site-1037261.mozfiles.com/files/1037261/busevufaxekuxapugaf.pdfIn PDF document text
    • https://site-1038578.mozfiles.com/files/1038578/40437875289.pdfIn PDF document text
    • https://site-1043844.mozfiles.com/files/1043844/namifeguw.pdfIn PDF document text
    • https://site-1038490.mozfiles.com/files/1038490/77252747310.pdfIn PDF document text
    • https://site-1040042.mozfiles.com/files/1040042/xobanixan.pdfIn PDF document text
    • https://site-1039621.mozfiles.com/files/1039621/74761176013.pdfIn PDF document text
    • https://site-1040317.mozfiles.com/files/1040317/dokugiziwiduruzulinazi.pdfIn PDF document text
    • https://site-1038514.mozfiles.com/files/1038514/23039410973.pdfIn PDF document text
    • http://files.edenspabeirut.com/uploads/1/3/2/7/132741189/329e3dd3.pdfIn PDF document text
    • http://files.shilohsdachicago.org/uploads/1/3/1/1/131164479/wuguvokosulekipegap.pdfIn PDF document text
    • http://gafeno.avianatechnologies.com/uploads/1/3/1/4/131409236/5fb6d6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.orgThisIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4692/9052/files/ap_chemistry_practice_exam_2014_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0457/0162/8060/files/marcy_foldable_exercise_bike_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8158/0953/files/dalukuvakevazafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7142/9025/files/40556413417.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
    • http://scripts.sil.org/In PDF document text
    • http://scripts.sil.org/OFLAbyssinicaIn PDF document text

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000550b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x550B 5532 bytes
SHA-256: 1620b91f04d30779fb1ced39977e929524f1100baa53d308dff8799e7c108ff1
font_01_sfnt_off000067c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C7 20968 bytes
SHA-256: 8a50b1fad94fcac7537c5153201d60a2294c73e4f296cf7002a1414b365f4041
font_02_sfnt_off000087f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F9 2276 bytes
SHA-256: b904886fb0aed2d1a1550db2ad7ef8d6d80fe463d13dff88c99773af1670c546
font_03_sfnt_off000091c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91C4 10124 bytes
SHA-256: daddbac709d14f2c26ce1e997cc3224ccfe800f321e98e89ca6c3cd49ca2268f
font_04_sfnt_off0000b448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB448 2056 bytes
SHA-256: 3f5735fa85cacf7eb548443b0765f2b392ae292a1c439defd44ff2a6c12fc023
font_05_sfnt_off0000bd00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD00 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230