Malicious PDF — malware analysis report

Static analysis result for SHA-256 146978ac375c9af1…

MALICIOUS

PDF

61.0 KB Created: 2020-10-12 00:51:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 23f5c9a38ce9cc5ae747e403201377e3 SHA-1: c40c0bafa25fd9d4899f494fdfe2adde75af4b17 SHA-256: 146978ac375c9af1ea65740a5bacb5a3a52ab99f6fa7ad9ad5ef2f532218975a
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://gettraff.ru/pify?keyword=sims+freeplay+hack+tool+apk+download+ios In PDF document text
    • https://site-1042545.mozfiles.com/files/1042545/legolujoku.pdfIn PDF document text
    • https://site-1036628.mozfiles.com/files/1036628/moxopirabezazofuger.pdfIn PDF document text
    • https://site-1036829.mozfiles.com/files/1036829/4576572177.pdfIn PDF document text
    • https://site-1041074.mozfiles.com/files/1041074/ridosibovojefexopeguji.pdfIn PDF document text
    • https://site-1039649.mozfiles.com/files/1039649/93051124479.pdfIn PDF document text
    • http://files.wiseowlwellnessclub.com/uploads/1/3/1/3/131398113/lefikulaxivivu.pdfIn PDF document text
    • http://mumod.wendyscountrymarket.com/uploads/1/3/1/4/131438316/1191409.pdfIn PDF document text
    • http://files.acoseyart.com/uploads/1/3/2/6/132682070/1d30f05657.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d154cc9d-7ea2-418d-9e37-c96bfec36a36/8677439858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d84eb29-81b3-4ade-b424-4671ecd5a296/92705448069.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce23abc5-a42e-4164-b480-d2a3078ab7e8/lojoranerimepamadovetow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bbd3d80-14a9-447a-ac4b-2773675fa555/nijurinigetugupebijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42c269f9-b38c-4842-85d7-bfa2b1622ae4/81815846403.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ead.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EAD 7468 bytes
SHA-256: 88a7ff9abcaaa8d1ad2243369ba80e605d9096e92d69b8acffd13c8525610b65
font_01_sfnt_off00008244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8244 5756 bytes
SHA-256: 29a1fcfda0c6423545021427ede02fe31a8439497f8a70b34b35f12c073b7f48
font_02_sfnt_off000095bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95BF 13620 bytes
SHA-256: d55c4212e462955714f48d949e4e4a79e7a247a61b440c6dae46613c5097d196
font_03_sfnt_off0000be34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE34 16840 bytes
SHA-256: 32a1f5bd0490cb5070a75663d67aad621ce2f5ca26831f75e58485b5ba318d41
font_04_sfnt_off0000d5c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C0 6412 bytes
SHA-256: 9e312cd43e504fb14a89cd7766f84a7b8b4cdbf1ecc573fc6b6c72a255ecdda6

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