Malicious PDF — malware analysis report

Static analysis result for SHA-256 da62609590e65810…

MALICIOUS

PDF

56.3 KB Created: 2020-10-25 12:56:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 78a0faca7f6085d2d70adc3c68cddabb SHA-1: 807e1acb06d9428ff0ff7a47d3e6bddf14e12b0c SHA-256: da62609590e658103002b0ecf1602156d930c4dcbd9354cde7972dccdb1e4b02
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://cctraff.ru/aws?keyword=carcassonne+complete+annotated+rules+pdf In PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/abee60c4ffd.pdfIn PDF document text
    • https://mokekisinuru.weebly.com/uploads/1/3/4/3/134366850/xagugo_veleradejaka.pdfIn PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/84da3.pdfIn PDF document text
    • https://sizukejagu.weebly.com/uploads/1/3/2/6/132681884/8902364.pdfIn PDF document text
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/ac1e7b346f228.pdfIn PDF document text
    • https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/f605b9aa5c57e.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/zutilipevozafeguwu.pdfIn PDF document text
    • https://jaketomerinojox.weebly.com/uploads/1/3/4/1/134109184/4811671.pdfIn PDF document text
    • https://nigokozop.weebly.com/uploads/1/3/4/4/134436215/6124010.pdfIn PDF document text
    • https://junoxavod.weebly.com/uploads/1/3/1/3/131384771/fujakewoxekirar.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4d5351fbb209c0.pdfIn PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/musub_noxevatug.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/lomovar_pixibalog.pdfIn PDF document text
    • https://jepupuwupojuv.weebly.com/uploads/1/3/4/4/134481076/5150122.pdfIn PDF document text
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/xasorowapumize_momofaxov.pdfIn PDF document text
    • https://talapilodegopez.weebly.com/uploads/1/3/0/9/130969507/paniwopuzaw.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/7306898.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00009a53.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00009a53.bin)
    • https://s3.amazonaws.com/bupijila/kewidaxakimikoxebejomi.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/83766938242.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/bipolar_junction_transistor_theory.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/manejo_de_varicela_en_adultos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56e45f2e-f632-4bf2-9a53-a2c9f07c6956/zeraketif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1795b7e6-cf2f-47cf-ab24-317814f8ad03/59236884642.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4905bf08-3e47-488d-affb-5a80cb7b35d8/7789502452.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b869c4d-e3d3-41c8-9c6a-634826e2be2d/ma_bohme_arthur_rimbaud_analyse_lin.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 extracted file (font_00_sfnt_off00009a53.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A53 5208 bytes
SHA-256: d0ee9d1b975456f8e5bd6cea654951138e4ea0fa17a5494aec92ca41e5daed22
font_01_sfnt_off0000abe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABE9 11676 bytes
SHA-256: ddcf6763c7f606c31873e3c09b936c91684403640836fb1b2c6eb496406c2aac