Malicious PDF — malware analysis report

Static analysis result for SHA-256 072cb77ce5e6519b…

MALICIOUS

PDF

39.5 KB Created: 2020-10-07 03:17:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: b22a3fe779d0ab138fb9ab69b5526db5 SHA-1: effa5c5a5608be188b59bd311ef309e88ed7b3b5 SHA-256: 072cb77ce5e6519b042946e4c0761aae331d3f33c33c81392917b08af85eebb4
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ggtraff.ru/pify?keyword=nba+2k15+apk+ios+free In PDF document text
    • https://site-1042591.mozfiles.com/files/1042591/sokugisi.pdfIn PDF document text
    • https://site-1038948.mozfiles.com/files/1038948/kujodurexenimawogadekexe.pdfIn PDF document text
    • https://site-1037059.mozfiles.com/files/1037059/32314199562.pdfIn PDF document text
    • http://remavevan.en.skandiaorgeln.com/uploads/1/3/1/4/131438304/besasuso.pdfIn PDF document text
    • https://site-1043408.mozfiles.com/files/1043408/97043118820.pdfIn PDF document text
    • https://site-1037029.mozfiles.com/files/1037029/38165013646.pdfIn PDF document text
    • https://site-1039828.mozfiles.com/files/1039828/28520201287.pdfIn PDF document text
    • https://site-1038455.mozfiles.com/files/1038455/dipakinuligifegamu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6986/6133/files/mortal_kombat_flash_unblocked.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7637/6983/files/44230605451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/7298/1658/files/black_sports_and_entertainment_hall_of_fame_martin_short.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/how_to_cancel_adobe_lightroom_account.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_off00005c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C88 5344 bytes
SHA-256: 0fe4ab976a5b0a56164e4d38cf309fcf3a5be64ec2fb5844e2cfd6c160f10a3e
font_01_sfnt_off00006ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ED8 10200 bytes
SHA-256: cee656e1d3b13e3b89a70681bdc22594596aff9f65fa156fa8222ee3e5577e70