Malicious PDF — malware analysis report

Static analysis result for SHA-256 1097f67e0e245bf7…

MALICIOUS

PDF

41.3 KB Created: 2020-10-06 11:53:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 409bc76ea77a0a6e4ba0d63d707aa313 SHA-1: cae3585b2fdd2ab104001ffff6c56db0043edfd4 SHA-256: 1097f67e0e245bf7da3a8066e8a3347109eacab5e42ce5aa430343831d46e67d
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.club/pify?keyword=trisha+yearwood+chicken+broccoli+rice+casserole In PDF document text
    • http://files.womenartistsreaction.com/uploads/1/3/2/3/132302863/8d22be5d98d153.pdfIn PDF document text
    • http://kuropib.juliawindle.com/uploads/1/3/1/4/131406437/1260466.pdfIn PDF document text
    • http://files.offthefrontporch.com/uploads/1/3/1/4/131406258/giwome.pdfIn PDF document text
    • http://files.katetobin.com/uploads/1/3/1/4/131453980/303278da.pdfIn PDF document text
    • http://files.dongarbutt.com/uploads/1/3/0/8/130813988/4152131.pdfIn PDF document text
    • https://site-1036823.mozfiles.com/files/1036823/puzepi.pdfIn PDF document text
    • https://site-1038532.mozfiles.com/files/1038532/70898092426.pdfIn PDF document text
    • https://site-1039903.mozfiles.com/files/1039903/61788594385.pdfIn PDF document text
    • https://site-1042498.mozfiles.com/files/1042498/ferevegas.pdfIn PDF document text
    • https://site-1039797.mozfiles.com/files/1039797/29333156652.pdfIn PDF document text
    • https://site-1037899.mozfiles.com/files/1037899/80109019410.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://cdn.shopify.com/s/files/1/0480/6397/1492/files/basketball_legends_halloween_unblocked_66.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1553/2454/files/plantronics_savi_w720_bluetooth_pairing_to_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1101/2770/files/skylanders_superchargers_trophy_guide.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_off000056ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56CE 5084 bytes
SHA-256: bd10f8b70dbe54e34b5c863f68692b8031a241ade1ffc9227c5ddc234d437e7a
font_01_sfnt_off00006811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6811 10004 bytes
SHA-256: 6a1257adb44104a8bcb98fc1d7fefcd19b78fcbc7a8a934ddb31be0a4c567395
font_02_sfnt_off00008a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A11 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378